The answer is...
B. Buffers
D) Discuss the problems in a calm respectful manner.
Answer:
muscular endurance because it takes time for your muscle to get used to a new routine
Explanation:
Your answer is B. Do a cost-benefit analysis to compare the alternatives. You have to chose how much you're willing/want to spend, what activities you're willing to spend on/do, and if the benefits of an activity fit or outweigh the costs. Also, not just monetary expenses but costs on your time, relationships, and other aspects of your life should be taken into account as well. Good Luck!