Answer:
Elbow
Explanation:
Muscle works in pairs and groups e.g biceps flexes the elbow and triceps extend it and it is called antagonistic muscle action.
The working muscle is called the primer mover or agonist. The relaxing muscle by another muscle is called synergists.
When muscles cause a limb to move through the joint range of motion,it could be synergists or antagonists.
I hope this will help you
The answer is C. My explanation is that in the sentence, it has the words “will probably,” next to each other, so that means it is not a fact and it is not a 100% for certain that it will/had happen(ed). People may have different feelings/views about it. Also, all of the other sentences are more direct and do not have those words, and they sounds confident. Hope this helps!