With reference to the law of parsimony, which of the following muscles would be activated during a prone push-up requiring maximal force?

Question

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According to the law of parsimony, the body will activate the fewest number of muscles necessary to complete the task. In a prone push-up requiring maximal force, the triceps brachii is the primary muscle responsible for extending the elbow joint against gravity. The triceps has three heads - the long, medial, and lateral heads - which all work together to produce elbow extension. Therefore, choice B is the best answer. The other muscle groups listed (biceps brachii, brachialis, anconeus) are not the primary muscles used in a prone push-up and would not be activated to the same extent as the triceps. The long and short heads of the biceps have the opposite action (elbow flexion) and do not contribute to pushing the body away from the ground.

With Reference to the Law of Parsimony, Which of the Following