Amutation of a brown exoskeleton has been introduced into the green beetle population above explain what might happen to the population with the introduction of this new trait

A mutation in the population of green beetle caused the creation of the new trait (brown color), that would make the genes for brown beetles become more frequent in the population. That created difference introduced by mutations might be advantageous and may help an organism survive. For example, green beetles are easier for predators to see and consequently eat than brown beetles. Thus, brown beetles are a little more likely to survive to produce offspring.  

This is an example of how one evolutionary mechanism (mutation) can cause evolutionary change.

is this a psat question, if so do not cheat try your best.

i think it’s c but i might be wrong. if i am let me know! have a good rest of your day as well!