Explanation:

- Kunal has done nothing since yesterday.

- “Since” is appropriate when indicating that an action or state started at a point in the past and continues to the present.

- Kunal has done nothing through yesterday.

- “Through” is not suitable here as it would imply actions continued uninterrupted up to the end of yesterday.

- Kunal has done nothing after yesterday.

- “After” implies a point beyond yesterday, which is incorrect. We are discussing the duration from yesterday to now.

- Kunal has done nothing from yesterday.

- “From” suggests a starting point but lacks clarity of continuation to present, making it awkward in this context.