Tropical storms, humidity, and frequent rainfall.
Clastic Textures
Grain Characteristics. The diameter or width of a clastic sediment grain determines its grain size. ...
Rounding. Clastic sediment grains can be round, angular, or in-between (subangular or subrounded). ...
Sorting. The extent to which all the grains are the same size is known as sorting. ...
Other Aspects of Texture.
I believe the answer is B. I think it's B because I just studied this subject in school and it sounds best
