Which sentence is punctuated correctly?

Responses

A The soup which was my mother's recipe overflowed on the stove and made a big stain.The soup which was my mother's recipe overflowed on the stove and made a big stain.

B The dog, that had never been trained, ended up winning the training portion of the dog show.The dog, that had never been trained, ended up winning the training portion of the dog show.

C The envelope, which had no return address, was sitting on the table at the foot of the staircase.The envelope, which had no return address, was sitting on the table at the foot of the staircase.

D The dolphin, with the scar on its back, was quickly identified by scientists as having traveled over 1000 miles in a month.

1 answer

The correctly punctuated sentence is:

C. The envelope, which had no return address, was sitting on the table at the foot of the staircase.

This sentence correctly uses commas to set off the non-essential clause "which had no return address."