Answer: The correct answer is B: Generate a novel behavior.
Explanation: Shaping is a type of differential reinforcement of succesive aproximations, and the goal is for the person, (in this case a cat name Fluffy) to exhibit a target behavior (Use his paw to turn on the Tv).
Turning on the tv with his paw is not a behavior Fluffy has, so Sarah reinforce succesive aproximations until fluffy exhibits a novel behavior.
In conclusion, the answer is B, in this case the shaping is used in order to generate a novel behavior.