When the continents separated, some of the same species ended up on different continents this was due from
a. geologic time
c. plate tectonics
b. evolution
d. natural selection

The correct answer is c. plate tectonics.

Plate tectonics were (and still are) responsible for the separation of the continents. When this happens there's lots of species that end up on two or more continents. This sets the basis for further evolution, and it is a perfect example how animals of the same species when living under different conditions change, evolve, thus develop different characteristics over time and may not even look alike even though they have the same ancestor.