Step 1: Understanding the proximity to raw material.
Industries such as sugar, cotton, and jute are ideally located near the raw materials they require to minimize transportation costs and to ensure fresh supply.
Step 2: Analysis of options.
- (a) Incorrect: Silk is obtained from sericulture, which is usually practiced in specific areas, not requiring close proximity to a raw material.
- (b) Incorrect: The jute industry is typically located in areas near jute-producing regions, such as West Bengal.
- (c) Incorrect: Cotton textile industries are located near cotton-producing regions, but the proximity to raw material is less crucial than in sugar industries.
- (d) Correct: The sugar industry is ideally located close to sugarcane-producing areas, as it requires fresh sugarcane for processing.
Step 3: Conclusion.
The correct answer is (d), as the sugar industry is most efficiently located near sugarcane-producing regions.
Final Answer: Sugar industry.