Answer:
A. skills are performed in a medium in which a greater degree of resistance is encountered than in air.
Explanation:
Well we know that me can mark B. off because swimming does take physical effort even while keeping your body flat in the water. Now you may also remove option choice D. Because much like moving your fingers you haft to thing about moving your arms one after another before you can actually do it. That leaves A. and C. Now knowing the facts stated in choice C. are false that leaves A. as the only reasonable answer.