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 use psychology to close more sales [title] Give something for free. [step] The principle of reciprocation is a psychological phenomenon described by dr. robert cialdini, an expert in persuasion. According to this theory, it is part of human nature to feel obligated to repay debts of all kinds, big and small. <sep> (A) To begin this process, ask yourself if you really are willing to sell something for free. If you are willing to throw in the money, then you are probably willing to take credit. (B) You can't force anything on someone else. [substeps] If you " feel " obligation to a friend or loved one, give them something to ask you " if i use this method, what will happen? " [title] Assemble your argument. (C) If someone receives something free, they will feel a psychological urge to purchase a product to pay you back for your kindness. [substeps] Offer a free trial period, a sample, or even a pleasant experience. (D) To do this you must pay for or at least accept the full offer. After that you must devise a plan of compensation.

SOLUTION: C

PROBLEM: Bunch of people are getting ready for kayaking, then another man holding a selfie stick to record a video of himself and then his friend while they are in kayak. Thhe camera is underwater, eventually lifting it to record the vast sea and other kayak riders. several people <sep> (A) are just in their kayaks, paddling around. (B) are sitting on water ramps, running in the water. (C) put on their paddles and start in a kayak, paddling away, and others are in a line. (D) are also fame seeking the land to kayak along the sea and doing different kinds of amazing activities.

SOLUTION: A

PROBLEM: [header] How to protect plants from animals [title] Use hot pepper spray. [step] Many animals don't like the taste of hot pepper or how it burns their noses. Any commercial brand of hot sauce dissolved in water will do or you can create your own version taking any hot peppers and water using any recipe and putting this in a spray bottle. <sep> (A) For added protection, you can even add candy corn oil to the spray bottle to neutralize the smell. Just follow the directions exactly on the bottle. (B) Most people like to get creative and make your own sauces. Make a taste experimenting jar or two for houseplant products. (C) You have to repeat this every week or after it rains for it to work effectively. [substeps] Wear gloves and don't get hot peppers in your eyes or in an open wound. (D) [substeps] Many tomato plants can be fed by this method. Any liquid will work, but milk, oil or ketchup will also work.

SOLUTION:
C