"Here is a partial list of what we took when we hiked a portion of the Appalachian Trail, some bug spray, a tent, some tins of food, some water bottles, and a first aid kit." The answer is D, a comma, because what you took on your trip is not a complete sentence, therefore not deserving a semi-colon (;) or a colon (:). B, is used to say ect. or break a quote into pieces. Therefore, the answer is D.
