Select the option that can be used as a one-word substitute for the given group of words or phrase.
Eternal; lasting forever or indefinitely

Correct option is C

The correct one-word substitute for "eternal; lasting forever or indefinitely" is (c) perpetual.
• Perpetual: means never-ending or lasting for an indefinitely long time; continuing without interruption.
• Perpetual: शाश्वत (Hindi meaning).
• Example: The perpetual motion of the planets around the sun fascinated the astronomers.
Meanings of the other given options:
• (a) Permit: To give authorization or consent for something to happen.
• (b) Perplex: To cause someone to feel confused or baffled.
• (d) Perpetrate: To carry out or commit (a harmful, illegal, or immoral action).