Choose the grammatically correct sentence:

The correct answer is Option (2) → My grandfather would rather take the overnight train to Chennai than fly.

“Would rather” + simple form of the verb:

• Would rather shows what a person likes to do more than something else.
• When the same person makes the choice and does the action, “would rather” is followed by the simple form of the verb: would rather take.

Why the Other Options are Incorrect?

Option 1: My grandfather would rather to take the overnight train to Chennai than fly. — Incorrect. “Would rather” is not followed by “to”.

Option 3: My grandfather would rather taking the overnight train to Chennai than fly. — Incorrect. “Would rather” is not followed by an -ing word.

Option 4: My grandfather would rather took the overnight train to Chennai than fly. — Incorrect. “Took” is the simple past. Here the grandfather himself takes the train, so the simple form “take” is needed.