Answer:
The sentence that is punctuated correctly is D.
Step-by-step explanation:
A colon means "that is to say" or "here's what I mean". In the case of D, the colon has been used to introduce an item or series of items. The speaker is naming the three pairs of shoes she owns. Moreover, you should bear in mind that you should not capitalize the first item after the colon unless it is a proper noun.