Question

Which sentence is punctuated correctly? A. Be prepared to carry these items: water, clothes, a sleeping bag, and food. B. Rosa's art drawer is full of: paints, brushes, sketch pads, and markers. C. My older sister's makeup bag holds: a mirror, powder, mascara, blush, and brushes. D. The play's ticket lists: the name of the play, the date, the start time, and the price.

Answer 1

it is C, because you are referring to the items in the makeup bag, where A is giving you instructions, so there is no need for :. 

Answer 2

The answer is C.
Due to the fact that the apostrophy in sister's needs to be there. Since the makeup bag belongs to the sister. (its showing ownership)
And the : (the dots so to speak) need to be there because it shows what the bag contains. Along with the commas, its showing a list, therefore when one is trying to list something, you continue the list by useing the commas.

~Hope this helped :)