Correct Answer: transmits

Solution : The correct option is the second option.

Explanation:
Transmits aligns closely with the meaning of imparts in the sentence as it refers to the action of passing on or conveying something, in this case, knowledge from Sheetal to her students.

The meanings of the other options are as follows:

• Discloses typically means to reveal or make something known.
• Exposes means to uncover or reveal something that was hidden or not widely known, often with the connotation of revealing something negative or problematic.
• Admits can mean to confess or acknowledge something.

Therefore, the correct answer is transmits.