Pick out the unsaturated fatty acid from the following

Options

A. Tearic acid
B. Lauric acid
C. Oleic acid
D. Keratin

Explanation

To solve the question of identifying the unsaturated fatty acid from a given list, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Fatty Acids**:
- Fatty acids are carboxylic acids with long hydrocarbon chains. They can be classified into saturated and unsaturated fatty acids.
- Saturated fatty acids have no double bonds between carbon atoms, while unsaturated fatty acids have one or more double bonds.

2. **Identifying Unsaturated Fatty Acids**:
- Unsaturated fatty acids contain at least one double bond in their carbon chain.
- Common examples of unsaturated fatty acids include oleic acid, linoleic acid, and linolenic acid.

3. **Reviewing the Given Options**:
- The question provides a list of fatty acids. We need to analyze each one to determine if it is saturated or unsaturated.
- For instance, oleic acid is known to be an unsaturated fatty acid because it contains one double bond.

4. **Classifying the Fatty Acids**:
- After reviewing the options, we can categorize them:
- **Unsaturated Fatty Acid**: Oleic acid
- **Saturated Fatty Acids**: Stearic acid, Lauric acid, Palmitic acid

5. **Conclusion**:
- From the analysis, we conclude that the only unsaturated fatty acid from the given options is oleic acid.

### Final Answer:
The unsaturated fatty acid from the given options is **oleic acid**.

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