For all ages?I think this is the answer
Step 1. write a story about European explorers. Step 2.add humor.
Answer:B. The vice president
Explanation:The Twenty-fifth Amendment (Amendment XXV) to the United States Constitution deals with issues related to presidential succession and disability. It clarifies that the vice president becomes president (as opposed to acting president) if the president dies, resigns, or is removed from office; and establishes procedures for filling a vacancy in the office of the vice president and for responding to presidential disabilities.
I think it is receptors that in this case monitor head position and eyes in any direction or the trailing of the eyes slowly in one direction , following by their rapid.
Answer: No se como hacer el cálculo
Explanation: Aún así creo que la opcion es la C