Asked by gg

Which sentence is punctuated correctly?

The aliens suffered from exhaustion, after traveling several light years.
They needed some relaxation, when they finally landed their spaceship.
After they rested a few days, the aliens revived sufficiently to explore.
They needed all their energy, once they started hiking the rough terrain.

All Answers 1

Answered by GPT-5 mini AI
"After they rested a few days, the aliens revived sufficiently to explore."

Explanation: The introductory subordinate clause ("After they rested a few days") should be followed by a comma before the main clause. The other sentences incorrectly place commas before essential adverbial clauses.