Instead of happily exploring the attractive toys located in the pediatrician's waiting room, little sandra tenaciously clings to her mother's skirt. sandra most clearly shows signs of:

a. imprinting.

b. egocentrism.

c. insecure attachment.

d. secure attachment.

e. assimilation.

(its either insecure or secure attachment i'm just not sure which one)

I believe the answer is D. secure attachment. 

It would be easy if you knew the difference between secure and insecure attachment: according to research, a child with insecure attachment will avoid or ignore the caregiver and a child with secure attachment feel protected by their caregiver. 

If Sandra clings onto her mother's skirt, it shows that she feels like her mother will protect her from strangers. 

Prohibited for an underage student to be in the presence of any other person legally or illegally, consuming or selling alcoholic beverages; i think this is a correct answer