which sentence is punctuated correctly?\nthe aliens suffered from exhaustion, after traveling several light…

which sentence is punctuated correctly?\nthe aliens suffered from exhaustion, after traveling several light years.\nthey needed some relaxation, when they finally landed their spaceship.\nafter they rested a few days, the aliens revived sufficiently to explore.\nthey needed all their energy, once they started hiking the rough terrain.

which sentence is punctuated correctly?\nthe aliens suffered from exhaustion, after traveling several light years.\nthey needed some relaxation, when they finally landed their spaceship.\nafter they rested a few days, the aliens revived sufficiently to explore.\nthey needed all their energy, once they started hiking the rough terrain.

Answer

Brief Explanations:

When a subordinate clause (like "After they rested a few days") starts a sentence, it is followed by a comma. In the first three incorrect options, the comma is wrongly placed between the main - clause subject and verb. In the fourth option, the comma placement is correct as the subordinate clause "After they rested a few days" comes at the start of the sentence.

Answer:

After they rested a few days, the aliens revived sufficiently to explore.