The answer is A steriotyping
Answer:
A phase-out.
Explanation:
This means to stop using something which has reached the end of it's functional lifespan. DVD players became obsolete (because new technologies became available) so it's makers decided to explore new alternatives.
This is called decline (or decay) phase which is when the utility and potential value in producing and selling the product begins to drop. This decline eventually reaches the point of zero (which is when the "phase-out" begins).
Mutant 1 will not be experimenting beta-galactosidade even if there is no lactose present; The mutant 2 will be experimenting beta-galactosidase in a very large amount whether there is lactose present or not.
Neither mutant will be experimenting beta-galactosidase even if there is not lactose present.
C I think is the correct answer