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 clean a plastic water tank [title] Open the outlet valve or tap. [step] The first step to cleaning your tank is to empty all of the water from it. To do so, open the outlet valve or tap at the bottom of your tank and let all of the water flow out. <sep> (A) [substeps] You may find that there's extra water in your tank that you need to empty. Read the instructions carefully to see if your water is full enough to remove. (B) You will have to remove several pieces of tank flooring to access one. For the best results, take the steps above. (C) Then, use a bucket to wipe the water down away from the water line, then gently empty the tank contents into the toilet. [substeps] You should also clean the water tank once every few months to keep it clean. (D) [substeps] Connect a hose to the open valve in order to direct the water to a location where it will not cause any localized flooding or erosion. Permanent water tanks have a washout valve that is located at the base of the tank.

SOLUTION: D

PROBLEM: [header] How to start a nanny business [title] Get a list of prospective nannies. [step] Advertise in newspapers, online ads, put signs up, and give flyers. If you have experience in child care, solicit coworkers and contacts to see if they are interested in providing nanny service or if they know others who would. <sep> (A) Online groups like the sunshine and children's network are great places to begin looking. Be sure to approach your current employer, perhaps to ask if they know of a nanny who would be willing to offer you a job. (B) Also keep in mind if someone does not want a flyer they are not interested so don't bug them they might spread the word, ruining your business. [title] Do a thorough background check on each candidate. (C) [substeps] Make sure to get a roster in question. Nanny cannot become a nanny, but a general guideline for a daycare provider's operations is to have several nanny's staff. (D) Maybe advertise with a school newspaper or with individual business cards. If the nanny is from a more prestigious family, contact them later so they can accept your offer.

SOLUTION: B

PROBLEM: [header] How to make a period kit [title] Get a small bag or purse. [step] You need something to hold your kit! But make sure it is big enough to hold pads and, if you use them, tampons. [title] Get some sanitary products. <sep> (A) [step] Which you use will depend on the size of your pads, or how big your shower kit is. Women using either or men should find some sanitary products. (B) [step] You will be using this' kit' when you get home from school (not leaving your pads in the first place). You can be wrapping something around things to wear in the bag, for example, a tissue bag. (C) [step] Usually, your first period is very light and just spotting, so pantyliners are perfect. For a heavier flow, you'll want pads or tampons. (D) [step] Socks are perfect for washing your body. Most stores just give you sanitary dish cloths.

SOLUTION:
C