Select the option that can be used as a one-word substitute for the given group of words.
To move or travel back and forth frequently

Correct option is B

The correct one-word for the given group of words is (b) Shuttle.

️Shuttle: To travel regularly between two places (Hindi: बार-बार आना-जाना)
Example: The bus shuttles between the airport and the hotel every hour.

Meanings of other options:

• (a) Grapple: To wrestle or struggle physically (Hindi: झगड़ना / पकड़ना)
• (c) Rupture: To break or burst (Hindi: फटना)
• (d) Foster: To encourage or promote (Hindi: बढ़ावा देना)

Why “Shuttle” fits best:
It’s the only word that implies frequent back-and-forth movement, which aligns with the phrase “to travel back and forth frequently.”