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 choose a protein supplement [title] Choose whey protein to build muscle. [step] If you're looking for muscle-building protein, whey protein is generally your best option. Whey protein can come in the form of powder or pills and is commonly used when people are trying to build muscle via things like weight training programs. <sep> (A) By doing this, you're gaining more body fat and growing more muscle at the same time. [substeps] Whey protein can be found in half of the packaged foods. (B) Whey protein is also a low-fat protein, rich in red blood cells from bacteria. Although whey protein does not impart healthy fats to the body, whey protein helps build muscle, which you can grow and burn through exercise. (C) [substeps] Look for a whey protein powder or supplement with a high biological value. This measures how well your body can absorb the protein. (D) Whey protein occurs as a food chain, hence the slogan, " protein is fat free ". [substeps] Whey protein is complex and varies from patient to patient.

SOLUTION: C

PROBLEM: [header] How to use memes on facebook [title] Log into your facebook account. [step] Go to facebook, and if you're not logged in yet, enter your registered email address, or username, and password in the top right fields. Click " log in " to continue. <sep> (A) [title] See all the memes in the top left section. [step] The memes you want to edit are listed below. (B) [title] Use the appropriate heading to search for memes. [step] In the upper-right corner of the page, you'll see a drop-down menu. (C) [title] Click the update status box at the top of the page. [step] There's an update status box at the top of your facebook news feed and timeline. (D) [substeps] If you haven't signed in yet, you'll need to give the sign in process a shot. Click the " sign in " button in the upper-right corner of the screen.

SOLUTION: C

PROBLEM: [header] How to pick an elementary school [title] Look at the location. [step] Location matters dramatically when it comes to picking schools. These are questions you should ask : [substeps] Is it safe to walk there? Would my child have to ride a bus? Would i be able to get there quickly if there is an emergency? [title] Look at after-school activities. <sep> (A) [step] There are a wide variety of activities that look great on elementary school uniforms. [substeps] Talk to your school's principal and administrators about what activities you'd want to do. (B) [step] Are there any opportunities for your child to get involved in these activities? Think about what the child would be interested in doing on a daily basis. [substeps] Think about whether or not the school is located within walking distance of your home. (C) [step] What kinds of special events are there at elementary school? The possibilities will be endless. This opens up a lot of new opportunities for you to ask your child if they are okay. (D) [step] If there several opportunities, like choir and band, then it is a good option. If there is nothing after school, then you may want to reconsider.

SOLUTION:
D