The thin strands of ______ that we see, are made up of still thinner strands called _______ .

Options

A. Fibre, Fabrics
B. Fabric, Yarn
C. Fibre, Yarns
D. Yarn, Fibres

Explanation

To answer the question, "The thin strands of ______ that we see, are made up of still thinner strands called ______," we can break it down step by step.

### Step-by-Step Solution:

1. **Identify the first blank**: The question mentions "thin strands." In the context of textiles, thin strands refer to "yarn." Yarn is what we see as the thin strands used in fabrics.

2. **Identify the second blank**: The question states that these thin strands (yarn) are made up of still thinner strands. In textile terminology, these still thinner strands are called "fibers." Fibers are the basic building blocks of yarn.

3. **Combine the answers**: Based on the above identification, we can fill in the blanks:
- The thin strands of **yarn** that we see, are made up of still thinner strands called **fibers**.

### Final Answer:
The thin strands of **yarn** that we see, are made up of still thinner strands called **fibers**.