Choose the suitable question tag from the options given below : Your…

The correct answer is Option (3) → doesn't she

Question tags:

• Rule: a positive statement takes a negative tag, and a negative statement takes a positive tag.
• The tag is made of:
  • The helping verb of the statement or, when there is none, a form of do.
  • A pronoun for the subject.
• This sentence:
  • "Your sister cooks well" is positive, so the tag is negative.
  • "Cooks" is simple present with no helping verb, so the tag uses does (third person singular).
  • "Your sister" becomes she.
• Complete sentence: Your sister cooks well, doesn't she?

Why the Other Options are Incorrect?

Option 1: do your — Incorrect.

• The tag must be negative after a positive statement.
• "Do" does not agree with a singular subject, and "your" is a possessive word, not a subject pronoun.

Option 2: not cooks — Incorrect. A tag repeats the helping verb, not the main verb, and it must contain a pronoun.

Option 4: doesn't well — Incorrect. "Well" is an adverb. The tag needs the pronoun "she" after "doesn't".