Osmoconformers survive changes in salinity by:

A. Constantly regulating the salinity of their body fluids.
B. Moving up and down the water column in order to spend most of the day in the salt wedge.
C. Pumping water into their bodies as salinity decreases.
D. Allowing the salinity of their body fluids to vary with that of the surrounding water.
E. Increasing the amount of salt in their body fluids no matter what the salinity of the surrounding water is.