Question

Which sentence does not contain any errors in comma usage?

A.
Gorillas travel in packs, walk on all fours, and sometimes stand upright.

B.
Gorillas travel in packs, walk on all fours, and, sometimes stand upright.

C.
Gorillas travel in packs walk on all fours and sometimes stand upright.

D.
Gorillas travel in packs walk on all fours, and sometimes stand upright.

Answer 1

to find the answer just read the sentences out loud, reading the commas as pauses until you find the one that sounds right

Answer 2

All three thoughts "Travel in packs", "walk on all fours", and "and sometimes stand upright" need to be separated by commas. But there is no need for "and" to have a comma on both sides.

Answer 3

Yep, so it's A. :)

Answer 4

A is right :)