If an excess of a liquid hydrocarbon is poured into a jar of chlorine, and the sealed jar is then exposed for several hours to bring sunlight, all the chlorine gas is consumed. The hydrocarbon is said to have undergone

A.

a polymerization reaction

B.

an isomerization reaction

C.

an addition reaction

D.

a substitution reaction

E.

a reduction reaction

Correct answer is D

No explanation has been provided for this answer.