Concept:Cement manufacturing needs bulky raw materials, so locating near limestone deposits reduces transport costs.
Explanation:Limestone is the main raw material for cement production.
It is heavy and bulky, making its transport expensive.
Hence, a cement plant is set up close to the limestone source.
This minimises the cost of moving raw materials to the factory.
Therefore, the deciding factor is proximity to the source of raw materials.
Answer:B. source of raw materials