Answer:
The kind of evolutionary mechanism responsible for both snakes is B) Sympatric Evolution.
Explanation:
We need to study two species of snakes, the Emerald Tree Bow and the Boa Constrictor, they belong to the same genus. However, the former is tree-dwelling and needs high humidity whereas the latter is terrestrial and requires a dry environment.
To explain this phenomenon we present a similar example: Imagine that your family has lived in the same house for many years. After that, imagine that your sister moves out of that house and into a house in a nearby neighborhood. She begins a new family there and, through the years, her family continues to grow and live in this new house. When your family separated, you became different groups of people from the same common ancestor. Eventually, you might even evolve enough to feel that there are more differences between you than similarities. When this happens in nature, it's called sympatric speciation. This process allows new species to evolve from a common ancestor, while the new and old species are still living in the same geographic region.
This example is almost the same as both snakes. Sympatric Evolution was responsible for this phenomenon.
Finally, we can conclude that the kind of evolutionary mechanism responsible for both snakes is B) Sympatric Evolution.
