 Which answer best represents a prominent theme of this passage?

Once a neutroid reached its age-set, it remained at that developmental level until death (sick experiments).  It's a 'mental deviant' and he was afraid of those (compared to physical?) Why are females disposed of automatically? (China birth law) Apparently he had done this multiple times, but who knows how many. Why is story told from Norris' POV? Not delmont? If they break the rule, compulsory divorce and sterilization.
They were such cute synthetic creatures, it was impossible not to love them. If I don't want to follow my aptitudes, the only choice is common labor. "They assigned me to it because I liked babies. And because I have a B.S. in biology and an aptitude for dealing with people. With its population legally fixed at three hundred million, most of the country had become one big suburb, dotted with community centers and lined with narrow belts of industrial development. 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. Attention All District Inspectors: Subject: Deviant Neutroid. You will immediately begin a systematic and thorough survey of all animals whose serial numbers fall in the Bermuda-K-99 series for birth dates during July 2234. This is in connection with the Delmont Negligency Case. Seize all animals in this category, impound, and run proper sections of normalcy tests. Delmont has confessed to passing only one non-standard unit, but there may be others. He disclaims memory of deviant's serial number. This could be a ruse to bring a stop to investigations when one animal is found. If allowed to reach age-set or adulthood, such a deviant could be dangerous to its owner or to others. Its replacement-quota of new neutroids was around three hundred animals a month. He tried to estimate how many of July's influx had been K-99s from Bermuda Factory. And there were only eleven empty neutroid cages in his kennel. He wadded the memo in his pocket, then nosed the truck onto the highway and headed toward Wylo City and the district wholesale offices of Anthropos, Inc. They should be able to give him a list of all July's Bermuda K-99 serial numbers that had entered his territory, together with the retailers to whom the animals had been sold. A week's deadline for finding and testing forty neutroids would put him in a tight squeeze. Of course, no hospital would play along with her fantasy and take a neutroid, especially since she couldn't pay for its treatment." You're welcome to it, Doctor, but you can't fake a serial number.
 Government actions made in the name of equality can sometimes cause more harm than good.
 If you're going to break a law, be prepared to deal with the consequences.  It is physically and emotionally dangerous to get too attached to others.  Government actions made in the name of equality can sometimes cause more harm than good.  Too much technological advancement can destroy a thriving society.