Trent does not respond to attempts at social interaction. he also engages in repetitive or odd motor behaviors and has a few restricted routines and interests that he focuses on. according to the in focus box, "neurodiversity: beyond iq," these characteristics are typical of a disorder called:

The correct answer is autism spectrum disorder.

Explanation:

Autism spectrum disorder (ASD) appears in the early years of life, especially in the first two years. Due to appear in the early stage of life its termed and classified as development disorder.  

It affects an individual's communication and behavior. Alcohol or toxic exposure during pregnancy or mutation can cause brain cell abnormality which can lead to autism disorder syndrome. Symptoms of this disorder are following-

Difficulty reading facial expressions, or social norms.

Trouble maintain emotion.

Difficulty keeping up a conversation.

Inflection does not reflect feelings.

Thus, the correct answer is autism spectrum disorder.