In most .........., cells secrete fibres of collagen and elastin:

Options

A. epithelial tissue
B. muscular tissue
C. connective tissue
D. nervous tissue

Explanation

### Step-by-Step Solution:

1. **Identify the Question**: The question asks which type of cells secrete fibers of collagen and elastin.

2. **Understand the Options**: The options provided are:
- Epithelial tissues
- Muscular tissues
- Connective tissues
- Nervous tissues

3. **Analyze Each Option**:
- **Epithelial Tissues**: These tissues primarily serve as coverings and protective layers for organs. They do not secrete collagen and elastin.
- **Muscular Tissues**: These are specialized for contraction and movement. They are made up of muscle fibers and do not secrete collagen and elastin.
- **Nervous Tissues**: These tissues are involved in the transmission of signals and are composed of neurons and neuroglia. They do not secrete collagen and elastin.
- **Connective Tissues**: These tissues are responsible for support, binding, and connecting various organs. They contain fibroblasts, which are the principal cells that secrete collagen and elastin fibers.

4. **Conclude the Correct Answer**: Since fibroblasts in connective tissues secrete collagen and elastin, the correct answer is **connective tissues**.

### Final Answer:
In most **connective tissues**, cells secrete fibers of collagen and elastin.

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