Although he is more than a year old, jason wakes up frequently during the night and is hard to soothe back to sleep. in general, he cries easily, is a fussy eater, and rarely naps at the same time every day. jason would most likely be categorized as:

difficult temperament

Explanation:

Based on the information provided within the question it seems that Jason would most likely be categorized as difficult temperament. This term refers to children that are slow at adapting, have negative moods, intense reaction to changes, and irregular functions. Which Jason seems to be demonstrating all of these aspects and thus can be categorized as difficult.