Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Step-by-step Solution:
We need to evaluate the truthfulness of both the Assertion (A) and the Reason (R), and then check if R is the correct explanation for A.
The Reason (R) directly and correctly explains the Assertion (A). The lack of iodine in the diet of people in mountainous regions is the scientific reason for the high prevalence of goitre there. Therefore, both statements are correct, and R is the correct explanation of A.