Question:

Which of the following situations would fulfill the author’s prophecy for swimming?

A Humans settling on the moon use swimming techniques to move through space (A).

Explaination

This question refers you to the conclusion sentence. The author states clearly that swimming must either progress into a new form or regress to the primal mode of movement. Choice B and D can be eliminated because they show no change, just a continuation of current circumstances. Choice A is an actual possibility as humans may very well be settling in outer space in the future.Choice A is the most realistic and relevant prophecy according to the premises developed by the author.