A. What do you know about Alex? 1) He is a pupil. 2) He is a new teacher. 3) He is a pupil's father.

The correct answer is 1) He is a pupil.<br /><br />Explanation: The question asks about Alex and provides three options. The correct answer is that Alex is a pupil. The other options, such as Alex being a new teacher or a pupil's father, are not correct based on the information provided in the question.