Which activity best promotes strength in the quadricep muscles?

The activity that best promotes strength in the quadricep muscles is squats with added weight. Squats primarily target the quadriceps because they involve a significant bending of the knees, which engages the quadriceps to extend the legs. As you perform a squat, especially when adding weight, the quadriceps must work harder to lift both the body and the additional load, thereby contributing to muscle hypertrophy and strength development.

While other activities mentioned may contribute to overall lower body strength, they do not isolate the quadriceps to the same extent as squats. For instance, deadlifts primarily engage the hamstrings and glutes, bridges target the glutes and lower back, and abductors work on the outer thigh and hip area. Consequently, squats with added weight specifically enhance quadricep strength more effectively than the other options presented.