Assertion (A): The frequency of floods in North Indian plains has increased during the last couple of decades. Reason (R
Let us keep Assertion-Reason simple. In Natural Disasters, the right combination here is Both (A) and (R) are true and (R).... First ask, is Assertion true? Then, is Reason true? Then, does Reason explain Assertion? When you answer those three, you get Both (A) and (R) are true and (R)....
Ref: [IAS (Pre) 2000] | Majid Husain, Geography of India, and NCERT Geography textbooks discuss Natural Disasters and explain the Indian geographical features and patterns that support the correct answer for this question.