How would a tsunami most likely affect the abundance of aquatic organisms in the intertidal zone of the ocean?

a) a tsunami would cause a downwelling, which would increase abundance because it would bring warm water into the ecosystem.
b) a tsunami would cause an upwelling, which would increase abundance because it would bring warm water into the ecosystem.
c) a tsunami would decrease abundance by causing physical damage to the organisms and their ecosystem.
d) a tsunami would decrease abundance by concentrating the salinity of the water near where it made landfall.