TASK DEFINITION: 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". 
PROBLEM: [header] How to polish rocks [title] Choose the right rock. [step] You can polish any stone you wish, but there are certain characteristics of a stone that will make it easier to polish. If you want an easy stone to polish, pick a somewhat softer stone like onyx, limestone or calcite. <sep> (A) [substeps] You can polish diamond, granite or ceramic stones by cutting thin pipe holes or inserting dry mortar into one side of each hole. Look for a stone that resembles a diamond, but not necessarily a diamond. (B) Otherwise, a smoother, more pumice-like stone will be more difficult to polish. [substeps] Emeralds and equilateral manganese are both excellent mineral polishes. (C) Stones that are very hard will take a much longer time to polish. However, though hard rocks take a long time to sand, they yield more shine than softer rocks. (D) Softer rocks will actually work more well, and might look better to polish very old stones, but brighter stones tend to chip quicker. [substeps] Rubies, sapphires, and emerald are good options.

SOLUTION: C

PROBLEM: Two men are talking in a news room. some people <sep> (A) are riding bikes in snowy terrain. (B) have gathered outside to watch. (C) are kayaking in the river. (D) are outdoors playing a game in a sandy field.

SOLUTION: B

PROBLEM: [header] How to overcome depersonalization [title] Acknowledge and accept the feeling of depersonalization. [step] The feeling of depersonalization is usually not dangerous and commonly fades. Remind yourself that the feeling is uncomfortable, but temporary. <sep> (A) This will make depersonalization have less control over you. [substeps] Tell yourself, " this feeling will go away. (B) When you become angered, sad, or upset, externalize the feeling. [substeps] Being angry with yourself is a common subconscious reaction, so you may want to deny that you're experiencing depersonalization. (C) Feel it for a moment and then move on to facing the emotion. [substeps] Change your attitude to acknowledge and accept that feeling. (D) Don't try to combat it or force yourself to deal with it. Remember that someone who is depersonalized can suffer a variety of life events, from being bullied or disturbed, to childhood problems, and to unexplained medical conditions.

SOLUTION:
A