Answer:
it would be a covalent bond
Explanation:
carbon has 4 valence electrons, while chlorine has 7.
Most atoms do not. For those atoms that do not have a full valence shell (which usually would contain eight electrons, except for hydrogen and helium, where it would contain two), something has to change. So nature's tendency toward a full valence shell will lead to one of two things: The gain or loss of electrons.
It will be the Displacement method