Which sentence does not contain any errors in comma usage?
a.
the puppy, wearing the red collar, is the most playful.
b.
i like that puppy, chasing its tail.
c.
rachel, observing carefully, found a quarter under some leaves.
d.
ross is the person, racing after the ball.

i don't know sorry i cannot read a novel in 30 min.

explanation:

but just in case i think the answer is b.

the main character of "the secret life of walter mitty" retreats into a false pretense as a means escape from his mundane reality -- this is a flagrant issue seen in societies abroad, typically found in young adults and it is robbing our youths of their childhood.

explanation:

a thesis -- a well developed, formal thesis is required to be one sentence long. there are many themes in "the secret life of walter mitty" and i had resolved to give you one of the simpler ones while still honing it with class.