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: An athlete practices tossing a javelin in a track a field course. The athlete starts with two or three side steps and then proceeds to toss the javelin. the athlete <sep> (A) then increases his speed and steps. (B) runs parallel to the chalk and throws four instructions that lead into a discus throw, where he throws the javelin as far as he can into the distance. (C) then does a backswing outside of the track. (D) throws the javelin to the other side and then back to the field.

Answer: A


Question: [header] How to treat ingrown eyelids in dogs [title] Look for squinting. [step] Squinting is an easily recognized sign of eye irritation. Your dog may squint if it feels like there's something in the eye that it can't get out. <sep> (A) In this case, the ingrown eyelid is causing the eyelashes to rub directly against the eye. If you can't tell if your dog is squinting, compare the size of your dog's irritated eye to the other one. (B) This is not always an indication of eye irritation. It's often the case that tears will build up within the eyelids, which can cause the eyes to appear unfocused and dry. (C) It may also display its eyelids twitching or blinking repeatedly. Some dog owners find it embarrassing to have their dog squint because of its inability to see. (D) Visit your vet if you notice : [substeps] Squinting irritation blockage of the eye. This is the case with retinitis, which causes squinting.

Answer: A


Question: [header] How to seal a driveway [title] Measure your driveway to determine how much sealant to purchase. [substeps] The sealant usually comes in 5 gallon (18. 927 liters) containers, which can cover as much as 400 square feet (121.92 meters). [title] Buy your materials. <sep> (A) [step] If your driveway is your own, you'll need to begin with resin or polyurethane. Open a can of sealant and coat the sides and top with a layer of resin or polyurethane. (B) [step] You will need the sealant, a crack filler, a push broom and a trowel. These items can be found at hardware and home improvement stores. (C) [step] You'll need a while to finish marking your driveway so you don't run out of sealant and other materials. For concrete, wrap masking tape around a block of wood and apply a coat of clear sealant to your home's concrete. (D) [step] You will need a 6 foot (2.1 meter) and 6 foot x 6 foot (1.2 meter) sealant. Hardware stores and supermarket stores usually sell pre-sprayed sealants.

Answer:
B