Pls help me out, this is forensics

early settlements on the subcontinent. both the indus and the ganges rivers carried rich silt from the mountains to the plains. when the rivers flooded, the silt spread over the plains and made the soil in the river valleys fertile for farming.

  b.

there are isolated pockets of farming, generally around rivers and oases, which are used for irrigation.

answer; i believe its (transgender);

answer; disconfirm the catharsis theory;