In what way are infants and toddlers more likely than preschool children to express posttraumatic stress disorder?

I believe the answer is:  Through their actions

since they cannot verbalize words to describe their feelings, infants would communicate their post traumatic stress disorder through the movement in their hands (that look like they're violently grasping the air) or by constantly have fearful expressions regardless of their situations

D. a conflict between her competing identities.