A river that divides a population of terrestrial salamanders could lead to

A) allopatric speciation.
B) sympatric speciation.
C) parapatric speciation.
D) none of the above

Allopatric Speciation

A mode of speciation occurring when biological populations of the same species become isolated from each other to an extent that prevents or interferes with genetic interchange.

Parapatric Speciation

A mode of speciation in which new species evolve in adjacent or overlapping geographic areas, often due to differences in habitat or environmental pressures.

Sympatric Speciation

The process by which new species evolve from a single ancestral species while inhabiting the same geographic region.