Dayshawn can choose two of his four t-shirts to take on a weekend trip.If the t-shirts are labeled A, B, C, and D, which choice represents the sample space, S, for the event?

Choosing two t-shirts means each outcome is a pair of different shirts. The order does not matter, so AB and BA represent the same choice. The six possible pairs are AB, AC, AD, BC, BD, and CD, which is choice C.

AI-written and checked against the verified answer.