When a ballet dancer goes up on their toes, the gastrocnemius and soleus (the two calf muscles) and the major flexors of the foot are the agonists. What does this MOST likely mean?

Agonists are the muscles that produce a movement by contracting; they are also called the prime movers. When a dancer rises onto their toes, the calf muscles help point the feet downward, so they are the major movers in that action. Therefore, these muscles are the major movers in the movement.

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