Explanation:

Certainly! Here's a breakdown of the options:

- Option 1: Cellulose

- Correct Answer

- Viscose fiber is made from cellulose, which is typically derived from wood pulp or cotton linter.

- Cellulose is a natural polymer, biodegradable, and abundant in nature.

- Option 2: Oil

- This option is incorrect.

- Oil is used in the production of synthetic fibers like polyester.

- It is not used in making viscose fiber.

- Option 3: Petrochemicals

- This option is incorrect.

- Petrochemicals are the foundation for synthetic fibers such as nylon and acrylic.

- Viscose does not use petrochemicals.

- Option 4: Coal

- This option is incorrect.

- Coal is not used directly in the production of viscose fiber.

- It is not relevant to the viscose fiber manufacturing process.