Which Statement About Research on the Social and Emotional Adjustment

Which statement about research on the social and emotional adjustment of deaf students is correct?

A) Research historically has been based on a deviance model.
B) Research indicates that they are able to fulfill the basic human need for communication in a variety of ways other than oral language.
C) Research has demonstrated that students with hearing loss tend to be more reflective thinkers than hearing students.
D) Research shows that they do well on IQ tests that measure verbal skills.