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". 

[EX Q]: [header] How to change a drill bit [title] Loosen the chuck. [step] The chuck is piece on the end of the drill that loosens and tightens to hold the bit. Grasp the chuck with one hand while you hold the handle of the drill with your other hand. <sep> (A) Loosen the chuck by sliding the drill bit along one side. If you have known it already, it will already be loose, but there is a screw on the end of the piece that holds the bit in place. (B) Use extra leverage as you slowly press down on the chuck to loosen it. [substeps] Keep your eye on the chuck while you are tightening it. (C) Twist the chuck counterclockwise to loosen it. Another option is to pull the trigger gently while holding the chuck. (D) Begin to tighten the chuck by turning it clockwise so that the chuck remains firmly in place. Use your wooden allen or long-handled allen key to turn the chuck clockwise until it is firmly within the drill's circle.
[EX A]: C

[EX Q]: A graphic shows and then photos follow of a girl growing up with horseback riding. Three years after those photos the girl moves and she is shown riding horses. the girl <sep> (A) is shown with other girls posing with some awards for horseback riding. (B) then takes an exercise class and the lady shows her how to ride with the palomino. (C) continuously rides down the country with other riders. (D) is then interviewed by a man and she smiles and claps her hands.
[EX A]: A

[EX Q]: A bunch of men are inside a green colored gym. they <sep> (A) each hold a little kid, shoes, duffel, and equipment. (B) are using paddles as they jump rope together. (C) are lobbing a tennis ball back and forth. (D) take off running, trying to get onto a row of sized balls.
[EX A]:
C