Study the given statements and select the correct option.
Carbohydrates, proteins, nucleic acids and lipids are primary metabolites.
Alkaloids, floavonoids, rubber, etc., are secondary metabolites.
Linoleic, linolenic and palmitic acids are the three essential fatty acids.

Options

A. Statements (i) and (ii) are correct.
B. Statements (i) and (iii) are incorrect.
C. Statements (i) and (iii) are correct.
D. Only statement (ii) is incorrect.

Explanation

To solve the question, we need to analyze each of the three statements provided and determine their correctness.

### Step 1: Analyze Statement 1
**Statement 1:** "Carbohydrates, proteins, nucleic acids, and lipids are primary metabolites."

- **Explanation:** Primary metabolites are organic compounds that are essential for the basic metabolic processes of organisms. They include carbohydrates, proteins, nucleic acids, and lipids, which are indeed crucial for life. Therefore, this statement is **correct**.

### Step 2: Analyze Statement 2
**Statement 2:** "Alkaloids, flavonoids, rubber, etc., are secondary metabolites."

- **Explanation:** Secondary metabolites are compounds that are not directly involved in the normal growth, development, or reproduction of an organism. They often have important ecological functions, such as defense against herbivores or pathogens. Alkaloids and flavonoids are classic examples of secondary metabolites. Thus, this statement is also **correct**.

### Step 3: Analyze Statement 3
**Statement 3:** "Linoleic, linolenic, and palmitic acids are the three essential fatty acids."

- **Explanation:** Essential fatty acids are those that must be obtained through diet because the body cannot synthesize them. The two primary essential fatty acids for humans are linoleic acid and alpha-linolenic acid (not linolenic). Palmitic acid is not considered an essential fatty acid as the body can synthesize it. Therefore, this statement is **incorrect**.

### Conclusion
Based on the analysis:
- Statement 1 is correct.
- Statement 2 is correct.
- Statement 3 is incorrect.

Thus, the correct option is that **Statement 1 & 2 are correct**.

### Final Answer
The correct option is: **Statement 1 & 2 are correct**.

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