Explanation:

- Cited: Used correctly. "Cited" means to mention as an example or proof. In the given sentence, it is appropriate because he mentioned reasons for his absence.

- Sited: Refers to the location or positioning of something. Not relevant in this context.

- Recited: Means to repeat something from memory. Not suitable here, as he was giving reasons, not listing them from memory.

- Sighted: Means having seen something. Not applicable to providing reasons.

- Option:4 – No improvement: The sentence is correct as it is. The word "cited" is used correctly.

- Correct Answer: No improvement

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