Answer :
"B. Gorillas travel in
packs, walk on all fours, and sometimes stand upright" is the sentence with the correct comma usage. Sometimes it helps to say the sentence out loud.
B is the correct answer. Gorillas travel in packs, walk on all fours, and sometimes stand upright. The comma indicates a pause that would occur if the sentence were spoken aloud.
Hope it helps!!!!
Can you chose mine as the brainliest answer????