Question

I think B,

Which sentence uses commas correctly?

A.
In competitions, she often rides that horse a three-year-old palomino.

B.
Rhode Island, the smallest state in the U.S., is part of New England.

C.
The eastern part of Florida a peninsula, is about 400 miles long.

D.
Izzy, one, of the new workers, always has a smile for customers.

Answer 1

Yep, it's B .

Answer 2

why?

Answer 3

A requires a comma after 'horse'.

C requires a comma after 'Florida'.

D should not have a comma after 'one'.