In this task, you are given a context and four options. Each option is a suggested ending for the context. You should read the context and pick the best ending for the context. Please answer with "A", "B", "C", and "D". 

[Q]: A man wearing grey shorts kneels down on a carpeted floor and begins stretching. The man moves his right leg under his hip and in front of his left knee. the man <sep> (A) continues exercising his left leg. (B) is then sitting while he's exercising and putting a harness. (C) then begins looking comfortable about doing this and stretches. (D) begins to rock back and forth in a slow movement as he stretches.
[A]: D


[Q]: [header] How to wear rings [title] Use a ring-sizer to find the appropriate size for a ring. [step] Ring-sizers are plastic sheets with a variety of different sizes on them, which you can slide your finger into to find an appropriate fit. These are available at every jewelry counter for sizing rings. <sep> (A) [substeps] Your ring should fit your finger comfortably. It needs to be snug enough so that it stays on, but loose enough to slide off at the knuckle. (B) Use your ring-sizer to find a size that fits your finger size-which sounds easy. [substeps] A ring size 14-inch (27.6 cm) is approximately the ideal size, though it can add a mature look to a ring. (C) Many rings, especially those with 3 or more sizes, will fit comfortably onto your ring. [substeps] You can also do this freehand by simply finding a ring-sizer with a similar size. (D) When one is worn, do not buy one with rounded sides. This is likely to break or splinter, and it will probably have uva, bva, and uvb features of the ring.
[A]: A


[Q]: [header] How to eat to improve fertility [title] Be aware that having a balanced, healthy diet does not guarantee higher fertility. [step] There are many online sources and several books that claim that switching to a more balanced and healthy diet can lead to improved fertility. Though it is always beneficial to eat a healthy diet, it should not replace other fertility treatments and options. <sep> (A) Making sure that you are eating adequate and not too many calories or trans fats can lead to strong, lasting health patterns. In order to see results, eating a balanced diet is essential. (B) The key to avoiding eating more fertility treatments is truly taking in proper nutrients and the exercises you perform regularly. [substeps] Vitamin b6, vitamin b12 and high quality foods like bread and fruits help you to relax and begin functioning properly. (C) [substeps] Healthcare providers believe that we often mistake pre-existing disease as the cause of our fertility problems. These people often mistake their diet as their only sources of positive energy. (D) However, maintaining a healthy diet and lifestyle may reduce a woman's risk of irregular ovulation and could improve her chances of getting pregnant. [title] Keep in mind fertility diets may only work for a small subsection of women.
[A]:
D