D is the answer I believe, I hope I helped :)
The answer is C, because if something contagious we’re to threaten the population of the species then not having any variant means they’re all the same and it would kill them all and cause them to go extinct
Answer:
C. The concentrations of products and reactants are equal.
Explanation:
A reaction has reached equilibrium when the concentrations of products and reactants are equal.
