Which sentence is punctuated correctly?

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

the correct answer is C) After they rested a few days, the aliens revived sufficiently to explore.

this is because the other sentences and options have commas that aren't needed or necessary and they have words in the wrong places.

some sort of sound device i believe.

“thy baited hooks shall tangle me no more.”

“hath taught me to set in trifles no store,”

“me lusteth no longer rotten boughs to climb.”