I'm gonna say D is the answer.
the actual CORRECT answer is change.
So,
The environment needs to [change] in order for natural selection to occur.
Don't worry i took the test trust me!
The correct answer for the question that is being presented above is this one: "<span>the mammal and the reptile." </span>The additional piece of information will be most helpful to Julia to properly build her phylogenetic tree is that i<span>t is trying to figure out on what tree it belongs to but it has some features of the animals but the 2 main ones: the mammal and the reptile.</span>
