The people in the given scenario are performing various acrobatic stunts. Specifically, they are executing a back tuck, a back tuck basket toss, and a front tuck basket toss. A back tuck is a gymnastics move where a person jumps backwards, tucks their body, and completes a full rotation in the air before landing on their feet. A basket toss is a cheerleading stunt where a person is thrown into the air by a group, and in this case, they are performing a back tuck or a front tuck while being tossed. The correct answer, "back tuck basket toss," indicates that the people are performing a combination of both the back tuck and the basket toss.