2008,My clutch is not working Entire clutch repair or clutch master cylinder repair? How do I check the cylinder?

While driving my car, I heard a pop, or recoil sound. The clutch pedal is nolonger going all the way to the floor and car will not shift into any gear, as it is stuck in neutral with no pedal ability.
Entire clutch repair or clutch master cylinder? How do i check the cylinder?

My car has 130000 miles.
My car has a manual transmission.