Which regions best identifies where myosin would have maximum cross-bridge access to actin?

Region between 2 and 3

Explanation:

Muscles consists of two protein filaments:a thick filament which is made up of protein myosin whereas a thin filament is made up of protein actin

During contraction,thin filaments slide past the thick filament resulting in shortening of sarcomere Myosin thick filaments grab on to the actin filaments by forming cross bridges The thick filaments pull the thin filaments past them making the sarcomere shorter The region between points 2 and 3 includes the area of overlap between thin and thick filaments

The answer is constant.