The answer would be A) Abiogenesis because abiogenesis is evolution or creation of an organism from non-living organisms so basically non-living organisms can become living organisms.
Ca+ binds to troponin -> Troponin removes tropomyosin from G actin -> Myosin binds to actin -> Myosin generates a power stroke -> the sarcomere shortens -> ATP recharges the myosin head
