Choose the most suitable question tag from the options given below to complete the statement

Ms. Reena seldom spends her time in the library.

does she?

Here's why:

• "Doesn't her?" is grammatically incorrect because the subject of the sentence is "Ms. Reena," not "her."
• "Do Ms. Reena?" is incorrect because the auxiliary verb "does" should agree with the singular subject "Ms. Reena."
• "Does her?" is incorrect because "her" is an object pronoun, not the subject.
• "Does she?" is the correct question tag because it agrees with the singular subject "Ms. Reena" and forms a grammatically correct interrogative sentence.

Therefore, "does she?" is the most appropriate way to complete the statement and politely inquire about Ms. Reena's library habits.