Assertion: Economic sustainability in the regions of the Indira Gandhi Canal cannot be attained only through the development of agriculture and animal husbandry.
Reasoning: The agricultural and allied activities have to develop along with other sectors of the economy. 

Both Assertion (A) and reasoning (R) are correct, but R is not the correct explanation of A.

Economic sustainability in the region cannot be attained only through the development of agriculture and animal husbandry. The agricultural and allied activities have to develop along with other sectors of the economy. This shall lead to the diversification of the economic base and establishment of functional linkages between basic villages, agro-service centres and market centres.