The first organic acid to be produced industrially by fermentation was :

Options

A. Acetic acid
B. Citric acid
C. Gluconic acid
D. Lactic acid

Answer

To solve the question regarding which organic acid was the first to be produced industrially by fermentation, we can follow these steps:

### Step 1: Understand the Question
The question asks for the first organic acid that was produced on an industrial scale through fermentation.

### Step 2: Identify the Options
We have four options to consider:
1. Acetic acid
2. Citric acid
3. Gluconic acid
4. Lactic acid

### Step 3: Recall Historical Context
To answer this question, we need to recall the history of fermentation and the production of organic acids.

### Step 4: Analyze Each Option
- **Acetic Acid**: Commonly produced through fermentation, but not the first.
- **Citric Acid**: Widely produced but came later in industrial fermentation.
- **Gluconic Acid**: Less common and not the first.
- **Lactic Acid**: Known for being produced through microbial fermentation and is recognized as the first organic acid produced industrially.

### Step 5: Conclude the Answer
Based on historical context and the analysis of each option, the first organic acid to be produced industrially by fermentation is **Lactic Acid**.

### Final Answer
The first organic acid to be produced industrially by fermentation was **Lactic Acid**.

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