Infants become attached to their primary caregivers through
a. contact comfort.
c. assimilation.
b. the moro reflex.
d. accommodation.

The answer is letter A.

Contact comfort is a situation in which babies become attached to their primary caregivers. This occurs because an innate pleasure of close physical contact is initiated between the baby and the caregiver. This event is where the infant or the baby develops its first attachment, usually with his mother. This gives babies a sense of security and comfort. 

The answer would be a (carbohydrates)

Inaccuracy is a disadvantage