I would say its becuase it was a utopian place. Everything needed to be perfect in order to stay utopian. Being different can ruin the "perfect" look. This is because people can hurt others based on what they look like. people who look the same won't necessarily bicker with each other
For example...
the book mentions that twins aren't a thing in their world. The idea of two people who look alike would confuse others therfore creating a stir in peoples minds. This is why they get rid of one of the two twins.
Another example is color..
they get rid of people's ability to see color so that there isn't a way for anyone to be different other that basic looks and age
The iconic memory has to do the visual memory system and provides a depiction of the whole visual perception for a short period of time, which lasts for about one second. Besides, it is connected to and supports the visual short-term memory system, which deals with eye-perceived information. As a result, Cailean's visual short-term memory system is involved, since she can recall all the information perceived by her eyes for a brief period of time.
The question is asking to choose among the following choices that states the sentences that is a subjunctive mood correctly used. Base on my research, and further investigation, the possible answer would be #<span>2 I demand that they be punctual. I hope you are satisfied with my answer and feel free to ask for more </span>