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: A man shows how to change a tube in a tire. he <sep> (A) puts a jack under the tube to lift it up. (B) puts a new tire on the tube. (C) takes the old tube out, puts the new one in, then pumps it up. (D) moves dirt covering the tube.

SOLUTION: C

PROBLEM: [header] How to do your makeup like eleanor calder [title] First, you want to apply foundation. [step] Eleanor uses the ysl le teint touche eclat foundation. Apply this in a light coat all over your face. <sep> (A) [title] Now, brush on eyeshadow over her eyeshadow if she doesn't have her usual eyeshadow. [step] If you choose to have an eyeshadow, simply apply it to her eyelid as a v. (B) This product is pretty expensive (40 pounds if you live in the uk and 50 dollars if you live in the usa). If this product is out of your price range, try using the' wake me up' foundation by rimmel. (C) [title] Hold the q under the eyebrow where girly victoria's runway wear to the eyebrow, and then apply products to the area to smell your face. [step] ( this is usually done when you're ready to do makeup. (D) The primer helps prevent liner from smearing the liner on your face. Make sure to apply your foundation with a large, wide brush.

SOLUTION:
B