The correct option is 1 and 3 only.
Explanation
The structural composition of an economy is classified into sectors based on the nature of economic activities. The Primary Sector involves activities that are undertaken by directly using natural resources.
Statement-wise Analysis:
- Statement 1 is Correct: The Primary Sector forms the base for all other products that are subsequently manufactured. It provides the raw materials (such as cotton, iron ore, or timber) required for the Secondary Sector (manufacturing) and supports the Tertiary Sector.
- Statement 2 is Incorrect: The Primary Sector is intrinsically linked to agriculture. Since most of the natural products obtained are from agriculture, dairy, fishing, and forestry, this sector is also frequently referred to as the "agriculture and related sector."
- Statement 3 is Correct: This sector includes all activities involving the extraction and harvesting of natural resources. Consequently, activities such as mining, forestry, fishing, and animal husbandry are integral parts of the Primary Sector.
Key Takeaway:
The Primary Sector is characterized by the direct exploitation of natural resources to produce goods, serving as the foundation for the Secondary and Tertiary sectors.