The most likely explanation for this is: A. Increased mobility is an adaptive advantage for living in fresh water fluvial environments.
(The most likely explanation for this; is; A. Increased mobility is an adaptive advantage for living in fresh water fluvial environments) Context(The most likely explanation for this is,List([0, 39))):(A. Increased mobility; is; an adaptive advantage for living in fresh water fluvial environments)
The most likely explanation for this is,List([0, 39))
The most likely explanation for this A. Increased mobility
is is
A. Increased mobility is an adaptive advantage for living in fresh water fluvial environments
an adaptive advantage for living in fresh water fluvial environments