Choose the correct sentence.

a) Not all mouse traps are designed to kill mice, some merely trap them.

b) Not all mouse traps are designed to kill mice some merely trap them.

c) Not all mouse traps are designed to kill mice; some merely trap them.

d) Not all mousetraps are designed to kill mice; some merely trap them.

The correct sentence is c) Not all mouse traps are designed to kill mice; some merely trap them.