Correct Answer: tell us

Solution : The error lies in the first option.

Explanation:
There is a disagreement between the subject, my father (which is singular), and the verb tell (which is in the base form without the '-s' suffix for third-person singular). When the subject is a singular third person (like "my father"), the verb should be in the third person singular form, which includes adding '-s' to the base form. So, the correct form is " tells " (third person singular).

Therefore, the correct sentence should be: Later in the day, my father tells us about his promotion.