Question

Which sentence correctly uses one or more commas to set off a

nonrestrictive clause?
A. The most important value is truth, which is what we strive for here.
B. Tornadoes which form from wall clouds, are a major threat to
houses.
C. Mars, which-orbits the Sun every 687 days has a longer year than
Earth.
D. The Confederates fired on Fort Sumter which belonged to the
Union.

Answer 1

C

Step-by-step explanation:

You use a comma to show a start of something in this case