Read the following passage and questions, then choose the right answer from options, the answer should be one of A, B, C, D.

<passage>:
MANNERS AND CUSTOMS OF THE THRID BY MURRAY LEINSTER The Thrid were the wisest creatures in space—they even said so themselves! [Transcriber's Note: This etext was produced from But also, and contradictorily, he saw them as right and just, or as wrong and intolerable. As a business man, he should have kept his mind him to be trying to live and do business. Thriddar. Most of them wanted to use missile weapons—which the Thrid did not use—to change the local social system. Most humans got off Thriddar—fast! And boiling mad. convictions he liked the Thrid. Their minds did do outside loops, and come up with intolerable convictions. But they were intelligent enough. didn't have missile weapons and they did have a social system that humans simply couldn't accept—even though it applied only to Thrid. The ordinary Thrid, with whom Jorgenson did business, weren't bad Trading Corporation, sometimes he got fed up. This morning was especially beyond the limit. There was a new Grand Panjandrum—the term was Jorgenson's own for the supreme ruler over all the Thrid—and when Jorgenson finished his breakfast a high Thrid other Thrid, wearing the formal headgear that said they were Witnesses from his voluminous garments. Jorgenson saw the glint of gold and was suspicious at once. The words of a current Grand Panjandrum were always written in gold. If they didn't get written in gold they didn't get "On this day," intoned the high official, while the Witnesses listened reverently, "on this day did Glen-U the Never-Mistaken, as have been his predecessors throughout the ages —on this day did the Never-Mistaken Glen-U speak and say and observe a truth in the presence of the governors and the rulers of the universe." Jorgenson reflected sourly that the governors and the rulers of the universe were whoever happened to be within hearing of the Grand always scared under an absolute ruler, but the Grand Panjandrum was worse than that. He couldn't make a mistake. Whatever he said had to scowled. "The great and Never-Mistaken Glen-U," intoned the official again, "in the presence of the governors and the rulers of the universe, did speak and say and observe that it is the desire of the Rim Star Trading received. The great and Never-Mistaken Glen-U did further speak and say and observe that anyone hindering this loyal and admirable gift must, of all the intolerable things that the Thrid took as a matter of realize what he had lost when no off-planet goods arrived on Thriddar. was a particular case of everything he disliked on Thriddar. It was not wise to be moved by such sympathetic feelings. The Grand spot. The Witnesses murmured reverently: "We hear the words of the Never-Mistaken Glen-U." The high official tucked away the scroll and said blandly: "I will receive the moneys, goods, and benefactions it is the desire There was an idiom in Thrid speech that had exactly the meaning of the The high official looked at him in utter stupefaction. Nobody contradicted the Grand Panjandrum! Nobody! The Thrid had noticed long ago that they were the most intelligent race in the universe. Since that was so, obviously they must have the most perfect government. But no government could be perfect if its officials made mistakes. So fundamental fact in the culture of the Thrid. discourage him. They began to believe. phrases that said the trading company wanted—wanted!—practically to give itself to the Never-Mistaken Glen-U, who was the Grand Panjandrum of Thriddar. He waited to be told that it couldn't have happened that anyhow it couldn't be intended. But the theologian's Thriddish ears Thrid just like you are! Of course he can make a mistake! There's unknown consequences for any Thrid who might be nearby. the trading-post. He put blasters in handy positions. The Thrid used sensibly as a human being. He'd gotten fed up with a social system and a—call it—theology it wasn't his business to change. True, the Thrid way of life was appalling, and what had happened to Ganti was let it disturb him. If the Thrid wanted things this way, it was their privilege. In theory, no Thrid should ever make a mistake, because he belonged to the most intelligent race in the universe. But a local governor was even more intelligent. If an ordinary Thrid challenged a local or insane. The local governor decided—correctly, of course—which of criminals chained together and doing the most exhausting labor the Thrid could contrive. If he was mad, he was confined for life. goods to Thriddar and take away other trade goods. The cost of doing business would be decreased. There could be no human-Thrid friction. But the local Thrid governor had spoken and said and observed that to him, and he almost doubted that an official was necessarily right. When his former wife died of grief, his disbelief became positive. And could see the towers of the capital city of the Thrid. He could see a cumbersome but still graceful steam-driven aircraft descend heavily to weren't intelligent enough to see what a racket their government was. an angry, dogged resolution to do something permanent to make matters better. For the Thrid themselves. Here he thought not as a business man only, but as a humanitarian. As both. When a whim of the Grand He reflected with grim pleasure that the Grand Panjandrum would soon be in the position of a Thrid whom everybody knew was mistaken. With Now it was evidently to be arranged that he would never again be seen face to face by a rational being. The Grand Panjandrum had won the Jorgenson changed from human-speech profanity to Thrid. He directed his words to the unseen creature who'd spoken. That Thrid listened, not be. It proved you either a criminal or insane, because no rational and Thrid. He knew a great many. The soft throbbing of the steam-driven them. The Thrid waved his arms wildly and seemed to screech gibberish Thrid voice—amazingly, a familiar Thrid voice—said: The Thrid was Ganti, of whom Jorgenson had once had hopes as a business He was calm about it. Only a Thrid would have been so calm. But they've had at least hundreds of generations in which to get used to injustice. "And just because they'd contradicted somebody who couldn't be wrong! Or because they had a business an official wanted!" He racked his brains for the most preposterous or faintest hope of himself for staying on Thriddar after he became indignant with the way the planet was governed. It was very foolish. But much more often he felt such hatred of the manners and customs of the Thrid—which had The seaweed had long, flexible stems of which no use whatever could be something he'd never noticed before, he told of the incredible conditioning-education of the young members of his race. They learned that they must never make a mistake. Never! It did not matter if they were unskilled or inefficient. It did not matter if they accomplished So Thrid younglings were trained not to think only to do what with such a population, a skeptic could make a great deal of confusion. If Jorgenson had been only a businessman, it would have had no the Thrid who had condemned him for life to this small island. He saw But by sunset he'd worked it out. While they watched Thrid's red sun crudely. The whole idea was novel to Ganti, but the Thrid were smart. it fails, they'll only stop giving us food and water." That, of course, did not seem either to him or Jorgenson a reason to It was not at all a direct and forthright scheme. It began with the in an art so long-forgotten that they had to reinvent the finer parts their practicing.

<question>:
What would the Thrid likely believe drives their system of governance?

<options>:
A Extensive study of nearby planetary governance successes
B Their ancient scriptures
C Opinion
D Wisdom of the supreme family lineage

<answer>:

D