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

<passage>:
of Earthmen. Malcomb told how he had been struck by Gavir's and had decided to bring Gavir to Earth. that the head of MDC himself had ordered the killing, because Gavir's father had tried to organize resistance to the Corporation. Mars was where the magic powers of the Earthmen and the helplessness of the Martian tribes would always protect the head of MDC from Gavir's knife, in his hand. He had faith in the knife, and in his skill with it. The hunter filled his lungs, the cold air reaching deep into his Crouching behind crumbling red rocks, racing over flat expanses of orange sand, the hunter sought traces of the seegee, the great slow desert beast whose body provided his tribe with all the essentials of before him a great brown seegee lumbered patiently, unaware of its danger. startled sidestep saved him from the neck-breaking snap of the great jaws. The drock's long body was armored with black scales. Curving fangs protruded from its upper jaw. Its hand-like forepaws ended in hooked claws, to grasp and tear its prey. It was larger, stronger, faster than the hunter. The thin Martian air carried weirdly high-pitched cries which proclaimed its craving to sink its fangs into the hunter's body. The drock's huge hind legs coiled back on their triple joints, with it again and again into the gray twitching belly. Colorless blood ran out over the hard, tightly-stretched skin. The drock fell, gave a last convulsion, and lay still. The hunter plunged the blade into the red sand to clean it. He threw back his head and bellowed his hunting cry. There was great glory in killing the drock, for it showed that the Desert Man and not the drock, was nerve-wracking business. If it weren't for Ethical Conditioning, I don't know how I'd control my aggressive impulses. The Suppression of Aggression is the Foundation of Civilization, eh?" Malcomb smiled. "Ethical Conditioning Keeps Society from Fissioning." on his way home, he left his room and went out into the city. In a pitifully few days he would be back in the Preserve, back with the fear of MDC, with hunger and the hopeless desire to find and kill the man who had ordered his father's death. Now he had an opportunity to learn more about the universe of the civilization is explained in books." Gavir wanted to learn. It was his only hope to find an alternative to the short, fear-ridden, impoverished life he foresaw for himself. A river of force carried him, along with thousands of Earthmen—godlike beings in their perfect health and their impregnable benignity—through the streets of the city. Platforms of force raised and lowered him through the city's multiple levels.... biggest of them wore a black suit, a long black cape, and a broad-brimmed black hat. He carried a coiled whip in one hand. The Earthmen turned to one another. "A Martian." "Let's give pain and death to the Martian! It will be a new experience—one to savor." with a practiced catapult-snap of shoulder, elbow, and wrist. To his surprise, the blade clattered to the street far short of his "What is wrong with them?" "They seem to have outgrown their Ethical Conditioning. They live wildly. Violently. It's a problem without precedent, and we don't know what to do with them. The fact is, Senile Delinquency is our number one problem." "Why not punish them?" said Gavir. "They're too powerful. They are often people who've pursued successful careers and acquired a good deal of property and position. And there The impeccably affable producer of Dreaming Through the Universe soft plumpness and a receding hairline made him look slightly older than average. He pointed a rigid finger at Malcomb and Gavir. "I want you two to Gavir stiffened. They had gotten into trouble because of his "Enormous!" "Potent!" "That hunting song drove me mad. I like appeals to the Century-Plus mentality. I want to try him again. This A Senile Delinquent! thought Gavir. She looked like Davery's younger night. Positively manic about him. I found out he'd be with you." "See?" said Hoppy to Gavir. "The Century-Plus mentality. You've got something they go for. Undoubtedly because you're—forgive me—such a complete barbarian. That's what they're all trying to be." "Spare me another lecture on Senile Delinquency, Our Number One Problem." She walked to the door and Gavir watched her all the way. Gavir thought. "Perhaps you would like the ." "It's part of a fertility rite," Malcomb explained. "Great! Give the Senile Delinquents another workout. It's not quite "Best response I've ever seen! The Century-Plussers have been rioting congratulated himself. He had learned emotional control from the Earthmen. Here was the man who had ordered his father crucified! Yet he had managed to hide his instant desire to strike, to kill, to carry out the oath of the blood feud then and there. Preserve." "Mr. Spurling!" said Malcomb. "Your tone is hostile!" "Damn right. That Ethical Conditioning slop doesn't work on me. I've Caution told Gavir to refuse. But before he could speak Spurling snapped, "Disgusting! An Earth woman and a Bluie! If you were on Mars, lady, we'd deport you so fast your tail would burn. And God help the Spurling laughed. "I've heard about you Century-Plussers. You're all oughtta be locked up!" Lucifer Grotto was in that same quarter in which Gavir had been Century-Plussers. Gavir told her about the attack, and she laughed. things, disgusting things, vicious things. You know they're all nothing, but you have to do something, so you go on doing nothing, elaborately and violently." it, chuckled, and read it again, aloud. "Sir: I beg you to forgive the presumption of my recent attack on you. Since then you have captured my imagination. I now hold you to be the noblest savage of them all. Henceforward please consider me, Your obedient servant, Hat Rat." "You've impressed him," said Sylvie. "But you impress me even more. In the months that followed, Gavir's fame spread over Earth. By hundred million—ninety-five percent of whom were Century-Plussers. Century-Plussers. Male Century-Plussers by the millions adopted blue enemies, false friends and callous leaders. It was a protest against sufferings that could neither be borne nor prevented. At the climax of the song Gavir pictured a tribal chief who refused to make fair division of the spoils of a hunt with his warriors. Gradually he allowed this image to turn into a picture of Hoppy Davery withholding bundles of money from a starving Gavir. Then he ended the song. A recorded voice boomed: "This is Hat Rat. Pay the Blue Boy what he deserves, or I will give you death. It will be a personal thing between you and me. I will besprinkle you with corrosive acids I will burn out your eyes upon the drock and stabbed and stabbed. The Desert Man howled his hunting-cry over the body of his enemy, and spat into its face. the Senile Delinquents were giving a party for him in the Pandemonium "Gavir!" floor and lay there face up, eyes open. The Senile Delinquents of Lucifer Grotto leaned forward to grin at the tattered body.

<question>:
What about Gaivir appealed to the century-plussers?

<options>:
A The fact that he was willing to be romantically involved with a century plusser
B His different appearance, especially his blue skin
C His amazing singing voice
D His untamed, barbaric nature

<answer>:

D