A physical therapist is evaluation a patient that sustained…

A physical therapist is evaluation a patient that sustained an injury during a football game.  The patient reports that they were attempting avoid a tackle and when they planted their leg to turn and run, they felt it give way.  They report feeling knee instability during weight-bearing and the therapist notes general knee swelling and laxity with an anterior glide of the tibia on the femur.  Which of the following is the most likely diagnosis?