Which one of the following combination of all three fatty acids are essential for human beings

Options

A. Oleic acid, linoleic acid and linolenic acid
B. Palmitic acid, linoleic acid and linolenic acid
C. Oleic acid, linoleic acid and arachidonic acid
D. Linoleic acid, linolenic acid and arachidonic acid.

Answer

To determine which combination of fatty acids is essential for human beings, we need to identify the essential fatty acids and analyze the options provided.

### Step-by-Step Solution:

1. **Understand Essential Fatty Acids**:
- Essential fatty acids are those that the body cannot synthesize and must be obtained through diet. The primary essential fatty acids for humans are:
- Linoleic acid (an omega-6 fatty acid)
- Alpha-linolenic acid (an omega-3 fatty acid)
- Arachidonic acid (derived from linoleic acid)

2. **Analyze the Options**:
- **Option A**: Oleic acid, linoleic acid, linoleic acid
- Oleic acid is a monounsaturated fatty acid and is not essential since the body can synthesize it.
- **Option B**: Linoleic acid, palmitic acid
- Palmitic acid is a saturated fatty acid and is not essential.
- **Option C**: Linoleic acid, linoleic acid, oleic acid
- Oleic acid is not essential, as mentioned before.
- **Option D**: Linoleic acid, linoleic acid, arachidonic acid
- Linoleic acid is essential, and arachidonic acid is also essential.

3. **Identify the Correct Combination**:
- The only option that includes all essential fatty acids is **Option D**: Linoleic acid, linoleic acid, and arachidonic acid.

4. **Conclusion**:
- Therefore, the correct answer is **Option D**: Linoleic acid, linoleic acid, and arachidonic acid.