All of the following contributed to speciation in darwin's finches except
a. changes in gene pools.
b. lack of competition.
c. behavioral isolation.
d. geographic isolation.

Brain Plasticity

Explanation:

This is an example of the brain's ability to adapt to changes in the body and loss of connections in the brain itself and is not fully understood. This is also why people that loss their vision can have much better hearing months or years later, as their brain adapts to the body's loss of a sense and compensates.