The correct option is
A Salty soil
Halophytes are naturally salt-tolerant plants that have evolved to grow in saline soils and waters with high salinity, such as in mangrove swamps, marshes and seashores. They are not usually found to grow near rivers or in rain water as they do not provide saline conditions. These plants have special physiological adaptations that enable them to absorb water from soils and from seawater, which have salt concentrations that nonhalophytes could not tolerate. Some halophytes are actually succulent, with a high water-storage capacity.