What abiotic factors characterize salt marshes?

Salt marshes contain abiotic factors that release harsh salinity or too much amount of salt dissolved on their soil solution.
Here are some of the abiotic factors that characterize salt marshes
=> High amount of salinity
=> anaerobic soil
=> toxic from sulphide
=> high temperature
=> sudden changes to its photoperiod
=> scour and drag
=> The nutrient ions result to low proportion of the total amount present in the soil.
Thus, salinity and flooding are the major factors that affect salt marsh species

It is used to during sexual reproduction between humans

The correct answer is d