The correct answer is option 1: Both A and R are individually true and R is the correct explanation of A.

Option 1 states that both the assertion (A) and the reason (R) are true, and R provides the correct explanation of A. Let`s analyze each statement separately:

Assertion (A) states that in areas of intensive subsistence agriculture, animal husbandry plays an insignificant role. This is true because in areas where subsistence agriculture is the primary focus, farmers usually focus more on growing crops for personal consumption rather than raising animals for commercial purposes.

Reason (R) states that throughout the region, farmers are handicapped in raising cattle due to a lack of scientific methods of breeding. This is also true because in many regions with intensive subsistence agriculture, farmers may not have access to advanced breeding techniques, such as artificial insemination or selective breeding, which limit their ability to raise cattle efficiently.

The reason (R) explains why animal husbandry plays an insignificant role in areas of intensive subsistence agriculture. The lack of scientific breeding methods hampers farmers` ability to raise cattle effectively.

Therefore, option 1 is the correct answer as both the assertion and the reason are individually true, and the reason provides the correct explanation for the assertion.