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". 

[header] How to avoid the stomach flu [title] Wash your hands often. [step] Wash your hands carefully with soap and water for at least 20 seconds. Always wash your hands after going to the washroom and before and after handling food and eating. <sep> (A) Washing your hands is important, since if the way you handle and eat is bad (germs, bacteria, etc. ), your best chance at preventing the flu is by keeping your hands clean. (B) Don't attempt to dry or clean your hands on something other than a business table. [title] Wear long pants (not utility pants to wear running shoes with). (C) [substeps] It's a good idea to wash your hands between-and as many times as you go to the bathroom. This will help prevent an episode of nausea in the future, as well as allow your body time to shut down its internal defenses to fight off food, germs, and viruses. (D) This will help to prevent the spread of germs. Germs on your hands can get into your eyes, ears, and nose and make you sick.
D

[header] How to find an email address for free [title] Start with a google search. [step] If you haven't already done it type the individuals name into google in quotations. If you know the town or city that they reside in you can type that in after a plus sign like so. <sep> (A) [substeps] Learn what their email address is before you send your email; if you can't find it on the address list, ask your secretary for recommendations. [title] Click the green " search for [your email name] " button at the bottom of the part titled " contact us. (B) [title] Add the zip code to the search. [step] For example, if you're searching for mr. (C) If you know where the person lives, type their telephone number into the first field, then search in the name field as well. If they don't have a home address, type their city and zip code into the fields provided, checking that you know your state's code. (D) Furthermore if you know their profession you could type something like [title] Search the social networks. [step] The popularity in social networking sites like myspace and facebook have escalated in modern times.
D

[header] How to befriend a shy introvert [title] Do approach the shy introvert subtly and by yourself. [step] This is far more effective than in a mob of people where the shy person is socially overwhelmed. [title] Do speak quietly and gently. <sep> (A) [step] Try not to stand directly in front of them. This makes the shy introvert feel more comfortable that you are walking into their moment of vulnerability. (B) [step] If you are explaining yourself clearly in a quiet and persistent manner, the shy introvert cannot like you and struggle to express themselves. As soon as you have explained yourself, you should kneel in front of the shy introvert and begin speaking to him calmly yet clearly. (C) [step] I know it might make him feel offended, but be polite. When you feel comfortable talking with this shy individual, wait until the introvert has a chance to speak and seem like he isn't defensive. (D) [step] This is more attractive, soothing and encouraging to the shy mind than loud, frenzied voices. [title] Do find and talk about shared interests or problems.

D