Movements of water where density increase underwater causes deep currents

IT IS TRUE

Horizontal, stream like movements of ocean water, that is caused by wind, and that occurs at or near the ocean's surface as ocean water changes from liquid to gas, it leaves behind solids, increasing salinity and density, which causes water to sink and become a Deep Current.

the answer would be..

b. sucking

the sun creates it's own light, also gives light and life to bunch of stuff like plants,animals,humans etc.photosyntesis is the process of making food which needs sun,water,nutrients etc.