A) It consistently results in the development of new species.
B) It only occurs as a result of geographical conditions.
C) It does not lead to evolution.
D) It serves as an evolutionary mechanism.
The correct option for the question Which Best Describes Biogeographic Isolation is B.
Explanation
The term "biogeographic isolation" describes how geographical barriers like mountains, rivers, oceans, or other physical obstacles separate populations of a species. Because of this isolation, groups cannot reproduce with one another, which results in the emergence of unique evolutionary pathways. This can eventually lead to speciation, a process in which populations diverge into distinct species as a result of a lack of gene flow.