Instructions Full Game: These are multiple-choice quizzes with four possible answer choices that include all questions in a given set.     
What part of the body fits the following description?
A large muscle group that includes the four prevailing muscles on the front of the thigh. It is the great extensor muscle of the knee, forming a large fleshy mass which covers the front and sides of the femur.
quadriceps
piriformis
sartorius
gluteus maximus