The correct option is 2 and 3 only.
Explanation
The economy is structurally divided into three sectors-Primary, Secondary, and Tertiary-which are highly interdependent. No sector operates in isolation; they rely on each other for raw materials, industrial inputs, and logistical support.
Statement-wise Analysis:
- Statement 1 is Incorrect: The Secondary sector (manufacturing and industry) does not operate independently. It relies heavily on the Primary sector for raw materials. For example, the textile industry requires cotton, and the sugar industry requires sugarcane.
- Statement 2 is Correct: The Primary sector (agriculture and allied activities) depends on the Secondary sector for modern inputs. Manufactured goods such as tractors, harvesters, fertilizers, and pesticides are essential for efficient agricultural production.
- Statement 3 is Correct: The Tertiary sector (services) provides the necessary infrastructure to link the other two sectors. Transport services move raw materials to factories and finished goods to markets. Consequently, a strike by transporters disrupts the supply chain, adversely affecting operations in both the Primary and Secondary sectors.
Key Takeaway: Economic sectors function as an integrated chain where the Primary sector supplies raw materials, the Secondary sector provides industrial tools, and the Tertiary sector facilitates trade and distribution.