The correct option is
C Undervalue
Disparage means regard or respect as being of little worth,undervalue.Option C is hence the correct option.
Option A; Command is to give an authoritative or peremptory order.This is an incorrect option.
Option B; Exalt means think or speak very highly of.This is not the meaning of the aforesaid word and hence this is an incorrect option.
Option D; Shallow means of little depth.This is an incorrect option as this is not the meaning of the mentioned word.