Explain how evolution accounts for diversity of living thing?

I think the answer is D for with evolution we have become complex. So the farther back we go the more simple we become so the farther ahead we go the more complex we become.

I really hope this is right.

ya the other dude is right

after a the power stroke, adp is released, but the cross-bridge formed is still in place. atp then binds to myosin, moving the myosin to its high-energy state, releasing the myosin head from the actin active site.