Given the equation representing a reaction:
what type of reaction is represented by this equation?

Answer:
Option D. Substitution
Explanation:
Alkanes under go substitution reaction with halogens to produce alkyl halide and hydrochloric acid. In this reaction, the hydrogen is replaced by chlorine as shown below:
CH3–H + Cl–Cl —> CH3–Cl + HCl.
We can see that one of the H atom in CH4 has been substituted by Cl.
The type of reaction represented by the equation in the image is an addition reaction.
These are reactions in which two reactants come together to give a single product.
In the reaction shown in the image, 2 molecules of chlorine combine with methene, an unsaturated compound.
The 2 chlorine molecules combine with the unsaturated compound and a saturated compound results.
More on addition reactions can be found here: https://brainly.com/question/13669873