Step 1: Understanding the Concept: 
This is a direct question about the origin of a specific type of fabric. Fabrics are named after the fibers from which they are made. 
Step 2: Detailed Explanation: 
- Cotton cloth is, by definition, a textile woven from the fibers harvested from the boll of the cotton plant. 
- Linen is a fabric made from the fibers of the flax plant.
- Kapok fibers come from the kapok tree and are typically used as stuffing, not for weaving cloth.
- Jute is a coarse fiber from the jute plant, used to make burlap sacks and ropes.
Therefore, cotton cloth is made from cotton fibers. 
Step 3: Final Answer: 
The fiber used to make cotton cloth is cotton.