Explanation:

Joint sector industry is classified based on ownership. Here's a concise explanation of each option:

- Source of Raw Material: Industries classified by the origin of their raw materials, such as agro-based or mineral-based industries.

- Capital Investment: Industries categorized by the amount of money invested, like small-scale or large-scale industries.

- Bulk and Weight of Raw Material: Industries classified by the physical properties of their raw materials, like weight-gaining or weight-losing industries.

- Ownership: Industries classified by ownership include public, private, joint, or cooperative sectors. Joint sector industries are owned and managed by the state and private entities.