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

<passage>:
mutants as children. He had been brought up in it. Emotion came in Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.] They were such cute synthetic creatures, it was impossible not to love them. Of course, that was precisely why they were dangerous! conflict with the grim necessities of his job. Somehow he would have to love them in the parlor and kill them in the kennel. It was only a matter of adjustment. of a district pound. You knew it before we got married." "I didn't know you killed them," she said venomously. "I won't have to kill many. Besides, they're only animals." " Intelligent "They are. I told her she had the wrong neutroid, but she got mad. Went animals!" "A small child is an imbecile. Would you kill a small child?" "You're taking intelligence as the only criterion of humanity," he started a black market in neutroids?" protested hopelessly, knowing that a logical defense was useless "Intelligent as a human imbecile, maybe." against sentimentality. "Baby—" "Don't call me baby! Call them ultimate destruction. That would bring the murderous wrath of their aptitude for dealing with people. Can't you understand? Destroying unclaimed units is the smallest part of it. Honey, before the evolvotron, before Anthropos went into the mutant-animal business, people used to elect dogcatchers. Think of it that way—I'm just a dogcatcher." Her cool green eyes turned slowly to meet his gaze. Her face was than the neutroids. A K-108 could speak a dozen words, and a K-99 never got farther than "mamma," "pappa," and "cookie." Anthropos was afraid to make the quasi-humans too intelligent, lest sentimentalists proclaim them really human. top, but the rest of its body was covered with blue-gray fur. Its tiny pink tongue was licking daintily at small forepaws with prehensile Norris grinned and drove on. A class-C couple, allowed no children of their own, could get quite attached to a cat-Q-5. The felines were emotionally safer than the quasi-human chimp-K series called "neutroids." When a pet neutroid died, a family was broken with grief but most couples could endure the death of a cat-Q or a dog-F. Class-C couples were allowed two lesser units or one neutroid. of growth hormones, trying to raise himself a harem to sell. Besides, you're required to keep sales records until they've been micro-filmed. Subject: Deviant Neutroid. Negligency Case. Seize all animals in this category, impound, and run proper sections of normalcy tests. Watch for mental and glandular Unauthorized neutroids could mean lots of trouble. number. This could be a ruse to bring a stop to investigations when one animal is found. Be thorough. If allowed to reach age-set or adulthood, such a deviant could be dangerous to its owner or to others. Hold all seized K-99s who show hundred square miles. Its replacement-quota of new neutroids was around for finding and testing forty neutroids would put him in a tight there." He hesitated. "The baby turned out to be a neutroid. It's Can't you send the neutroid to a vet?" humans. Of course, no hospital would play along with her fantasy and take a neutroid, especially since she couldn't pay for its treatment." "I still don't see—" . You're welcome to it, Doctor, but you can't fake a serial number. She'll know it. And even though they look exactly alike, the new one won't recognize her. It'll be spooky." There was a long pause, followed by a sigh. "I'll try it anyway. Can I But he saw it as a quick way to get rid of an animal that might later have to be killed. one of them with assault. I tried to pick up their neutroids for a "It's not funny. I've got to get those neutroids. It's in connection they just won't listen to reason. But get those neutroids." for the fragile neuter humanoid creatures, and another for the lesser mutants, such as cat-Qs, dog-Fs, dwarf bears, and foot-high lambs that The doll-like neutroids began their mindless chatter as soon as their keepers entered the building. Dozens of blazing blond heads began dancing about their cages. Their bodies thwacked against the wire mesh as they leaped about their compartments with monkey grace. Their human appearance was broken by only two distinct features: short beaverlike tails decorated with fluffy curls of fur, and an erect thatch of scalp-hair that grew up into a bright candleflame. Otherwise, they appeared completely human, with baby-pink skin, quick little smiles, and cherubic faces. They were sexually neuter and never grew beyond a predetermined age-set which varied for each series. Age-sets were available from one to ten years human equivalent. Once a neutroid reached its age-set, it remained at the set's child-development level until death. "They must be getting to know you pretty well," Anne said, glancing "That's not the point. There's a reason for the mechanical feeders." He paused, wondering how he could tell her the truth. He blundered on: "They get to love whoever feeds them." "I can't see—" "How would you feel about disposing of something that loved you?" pets, always frightened of strangers. radiation from the enlarger. A good operator can get one success out of determinants, and in the glandular makeup. Not a standard neutroid develop sexuality. A neutroid would be born a female That keeps ovaries from developing and it comes out neuter. But the back of the kennel-truck. He grinned at his wife. "This little fellow, for instance. It might be a potential she. It might also be a Anne snorted and caught the baby-creature in her arms. It struggled and tried to bite, but subsided a little when she disentangled it from the snare. "Kkr-r-reee," it cooed nervously. "Kkr-r-reee!" learned: to steer clear of emotional attachments. It was eight months old and looked like a child of two years—a year short of its age-set. And it was designed to be as affectionate as a human child. She looked up and shook her head. "It belongs to somebody else. If it fixes a libido attachment on you, you're actually robbing its owner. They can't love many people at once." She snorted, but installed the thing in its cage. heart over one of these pathetic little artificial animals. We're going to have a baby." "You know what they'd do to us?" "If they catch us, yes—compulsory divorce, sterilization. But they "Neutroid trouble." He went into the neutroid room and flicked a switch. A few sleepy was obvious. Society manufactured them because killing them was permissible. Human babies could not be disposed of when the market became glutted. The neutroids offered solace to childless women, kept them satisfied with a restricted birth rate. And why a restricted A neutroid filled the cradle in his stead. A neutroid that never ate as much, or grew up to be unemployed. A neutroid could be killed if

<question>:
What is the most dangerous aspect of the neutroids and other mutant animals?

<options>:
A Because they are grouped together in isolated areas, it is possible that they could use their adorable appearance and innocent demeanor to hide the fact that they are conspiring to overthrow the society.
B Because they only live up until a certain age, they often act with a level of invincibility that is threatening to society and its systems of social stratification.
C Their cute appearance causes others to underestimate their high predatory instincts and behaviors, and many injuries and deaths result because of this incongruency.
D Their cute appearance makes it easy for humans to get attached to them, and mass levels of attachment could potentially thwart current methods of classifying members of society.

<answer>:

D