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 write a newspaper headline [title] Understand the key elements of a newspaper headline. [step] A good newspaper headline will be factually correct, connect to ordinary readers, attract attention using active words, and match the tone of the article. [substeps] Accuracy is very important when writing a newspaper headline, as you do not want to create an unintended meaning or confuse your reader. <sep> (A) It's critical that headlines match a published page or text. So do not simply copy and paste the journalist's name or a non-published article after a headline and e-mail the cover letter to the editor. (B) [title] Include a colon at the top of the page and then a colon after it. [step] The first colon will act as a prompt and the other colon will be used to write the rest of the article. (C) The headline should be at least three-quarters of the way down the entire body of the article. Rarely is a headline more important than the rest of the article. (D) Avoid exaggerating or embellishing the content in the article by using an overblown headline. Instead, aim to communicate clearly with your reader through a short, one to three word headline.

SOLUTION: D

PROBLEM: [header] How to calculate a light year [title] Define the light year. [step] A light year is a measure of distance equal to how far light travels in one earth year. Because distances across the universe are so large, astronomers use light years. <sep> (A) However, they can also be determined by dividing by a distance. [substeps] Some light years are used year-round. (B) For light year 2014, the main determiner is the sun. In the light year, the world is filled with light bulbs. (C) Without light years, discussing the distance between two stars would require the use of large, unruly numbers. [substeps] Another measure of distance you may come across when learning astronomy is the parsec. (D) [substeps] There are two kinds of light years: day and night. The two types of light years are known as night and day.

SOLUTION: C

PROBLEM: [header] How to clean altro flooring [title] Sweep and vacuum the floor. [step] Use a push broom and a dustpan or a vacuum to remove all of the loose dirt and debris from off the surface of the floor. Doing this before applying a cleaning solution will make cleaning the floors easier. <sep> (A) [substeps] For floors that are headed for wood, scrape all soap and natural oils from the floor at the beginning of each sweep. For floors that need to be cleaned a lot, use a handheld vacuum. (B) [title] Mix an alkaline cleaning solution with warm water in a bucket. [step] You can purchase these cleaners online or at a store that specializes in floor cleaning. (C) Wipe with a broom or vacuum included with your cleaning kit, which can be purchased at most hardware stores or online. [substeps] Grab the cleaning comb and dustpan you normally use to sweep the floor. (D) [substeps] You should also vacuum on a low level surface of the floor. For a high level level floor, lift the broom handle up and down for two to three minutes after sweeping the floor.

SOLUTION:
B