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".
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Question: A person is windsurfing in the body of water. the person <sep> (A) missed a point as they windsurfing through the water. (B) holds onto a rope attached a to a boat as the boat moves through the water. (C) turns the board and sail around. (D) windsurfs over rocks and trees.

Answer: C

Question: [header] How to find the number of a blocked call [title] Get an private branch exchange (pbx) account. [step] One option is asterisk, a free, open source software. Another is switchvox. <sep> (A) This will also work better than 200 blackwire. If you buy one, it will work with the same account ($ 0.11). (B) The pbx is considered to be a free exchange. While this service typically does not have much use for a desktop account, it gives you access to many anonymous call accounts. (C) A pbx converts your computer into a telecommunications device and will allow you to manipulate incoming call data to identify blocked callers. [substeps] Before embarking on this method ensure that you thoroughly understand the technical challenge it presents and the potential financial burden it incurs. (D) Without switchvox here you are on better business. No other option is available to get a contact number from an online website.

Answer: C

Question: [header] How to be a bondi lifeguard [title] Contact a surf life saving club in or close to bondi. [substeps] Just about anyone can volunteer to be a lifesaver at sydney surf life saving clubs. Surf clubs will be happy to chat to you and tell you what is required if you want to be a volunteer lifeguard. <sep> (A) [title] Find the best and safest surf-life saving club in your area. [substeps] Surf lifeguards live off the beach, and they will probably need two-way water transportation, quite possibly a car or bicycle. (B) Many will provide all the training you'll need. Call them, check out their websites or simply head down and chat to them. (C) This can be achieved by attending the lifesaving club on the first day, then going on to other lifeguard's clubs along the way. If there are lifeguards at any of their lifesaving clubs, talk with one of those lifeguards. (D) This is the only legal aspect of volunteering. They will be able to suggest hours of work that are perfect for you or your specific lifeguard job.

Answer:
B