Which of the Following Correctly Describes,or Is an Example Of,habitat

Multiple Choice

Which of the following correctly describes,or is an example of,habitat isolation?

A) Members of different frog species never come in contact due to a difference in mating season.
B) Members of different bird species never come in contact due to differences in their songs or mating calls.
C) Members of the same species never come in contact due to a geographic barrier to interbreeding.
D) Morphological features such as size or incompatible genitalia prevent interbreeding.
E) Members of different plant species are in flower at different times of the season,minimizing interbreeding.