PLEASE HELP !!!!!!!!!!!! Which sentence contains an incorrectly punctuated appositive?

A.
The fastest runner on the team, Lauren Silverman, recently sprained her ankle.

B.
The athlete Michael Jordan won six basketball championships with the Chicago Bulls.

C.
My swimming instructor Martha, was once an Olympic medalist.

D.
There was only one hit, a double, against Jimmy during the first five innings.

Question

PLEASE HELP !!!!!!!!!!!! Which sentence contains an incorrectly punctuated appositive?
 
 A.
The fastest runner on the team, Lauren Silverman, recently sprained her ankle.
 
 B.
The athlete Michael Jordan won six basketball championships with the Chicago Bulls.
 
 C.
My swimming instructor Martha, was once an Olympic medalist.
 
 D.
There was only one hit, a double, against Jimmy during the first five innings.

foreverjennnicole · Answer

When commas are placed in a sentence, it's to create a pause in the flow. To me the answer that doesn't flow the best is C.