Which material is primarily made from coal or petroleum?

• A. Cotton
• B. Wool
• C. Polyester
• D. Satin

Answer: (C)

Polyester is primarily made from coal or petroleum through a chemical process involving the polymerization of various inorganic compounds. It belongs to a category of fibers known as synthetic fibers, which are created using carbon-based resources. This production involves deriving polyethylene terephthalate (PET), a common form of polyester, from crude oil.

Unlike natural fibers such as cotton and wool, which are sourced from plants and animals respectively, polyester is entirely man-made, with environmental impacts stemming from its petroleum origins. Satin, on the other hand, refers to a weave style rather than a specific material and can be produced from various fibers, including silk, polyester, or nylon, but is not exclusively derived from coal or petroleum. Therefore, polyester stands out as the correct answer as it is directly linked to these fossil fuels in its production process.