American Sycamore (Platanus Occidentalis)and European Sycamore (Platanus Orientalis)are Tree Species

Multiple Choice

American sycamore (Platanus occidentalis) and European sycamore (Platanus orientalis) are tree species that will interbreed if planted nearby but will not normally interbreed because they occur on different continents.This is an example of

A) mechanical isolation.
B) temporal isolation.
C) habitat isolation.
D) behavioral isolation.
E) gametic isolation.