Step 1: Understanding the Concept:
A forest-based industry is one that depends on raw materials derived directly from forests. These industries utilize forest products like wood, bamboo, resins, lac, and leaves either as primary raw materials or as secondary support.
Step 2: Analysis of Options:
Lac industry: Lac is a resinous substance secreted by insects found on trees. It is processed into shellac, varnishes, and sealing wax. Clearly dependent on forests.
Paper industry: Requires wood pulp, bamboo, and other forest-based raw materials for manufacturing paper.
Timber industry: Completely dependent on forest wood for furniture, construction, and other uses.
Step 3: Detailed Explanation:
Since all three options (lac, paper, and timber industries) rely heavily on forests, the correct answer is that all of them are forest-based.
Step 4: Final Answer:
The forest-based industries include Lac, Paper, and Timber industries, so the correct answer is All of these.