Detailed Solution:
The correct answer is “Both (A) and (R) are true but (R) is not the correct explanation of (A)”.
While it's true that Indian federalism is often described as "quasi-federal" and India has an independent judiciary with the power of judicial review, the latter is not the primary reason for the former.
The quasi-federal nature of Indian federalism is largely due to factors such as the unitary bias in the Constitution, the dominance of the central government in certain areas, and the flexibility in the distribution of powers between the central and state governments.
The independent judiciary with the power of judicial review plays a crucial role in upholding federalism and ensuring that the powers are not exercised arbitrarily, but it is not the sole reason for India's quasi-federal system.