-Is this your pencil sharpener? -__________. It is Jim's pencil sharpener. [ ] A. Yes,I am B.

-Is this your pencil sharpener? -__________. It is Jim's pencil sharpener. [ ] A. Yes,I am B. Yes, it is C. No, it isn't D. No, it is

The answer is C. No, it isn't. The second sentence clarifies "It is Jim's pencil sharpener," indicating the pencil sharpener doesn't belong to the speaker. Since the question asks "Is this your pencil sharpener?" and the response negates ownership, the correct choice is the negative form "No, it isn't."

Analysis of options:

A. "Yes, I am" incorrectly refers to the speaker rather than the pencil sharpener.

B. "Yes, it is" contradicts the following statement identifying Jim as the owner.

C. "No, it isn't" correctly denies ownership before specifying Jim.

D. "No, it is" is grammatically inconsistent (negative + positive).

When answering possession questions like "Is this your...?", match the subject ("it" for objects) and align the response with subsequent information about ownership.