What characteristic is important for plants found in saltwater wetlands?

The important characteristics for the plants which are found in salt water wet lands is salinity tolerance.

Salinity tolerance is the salt tolerance of crops in the wet lands which gives maximum salt level that a crop can tolerate without losing its productivity.

Although it may get affected negatively at higher levels of exposure. The salt level is often measured as the soil salinity or else the salinity of the irrigated water.

i think that the answer is c