Which sentence does not contain any errors in comma usage? A. His new shoes look like big, brown torpedoes. B. The darker, thicker material will be better for the cushions. C. This is the best, and most interesting trip I've ever taken. D. This long tiring and sweaty hike is no fun any more.

Answer :

I believe the right choice is A. His new shoes look like big, brown torpedoes.
I believe it is A.
 A. is correct. 
B. needs commas after thicker
C. 
Doesn't seem like it needs a comma
D. needs commas after long and tiring