Assertion: Agricultural output increased several times after introducing of DDT
Reason:DDT was the first insecticide used on a wide scale

Options

A. If both assertion and reason are true and reason is the correct explaination of assertion
B. If both assertion and reason are true but reason is not correct explaination of assertion
C. If assertion is true but reason is false
D. If both assertion and reason are false.

Explanation

To solve the question regarding the assertion and reason about DDT, we can break it down into the following steps:

### Step 1: Understand the Assertion
The assertion states that "Agricultural output increased several times after the introduction of DDT."
- DDT (Dichlorodiphenyltrichloroethane) is an organochlorine pesticide that was widely used to control pests that damage crops. Its introduction did lead to a significant increase in agricultural productivity by effectively reducing pest populations.

### Step 2: Understand the Reason
The reason states that "DDT was the first insecticide used on a wide scale."
- DDT was indeed one of the first synthetic insecticides that was used extensively in agriculture. Its widespread use helped farmers manage pest problems more effectively, leading to increased crop yields.

### Step 3: Evaluate the Relationship
Now, we need to evaluate if the reason provided correctly explains the assertion.
- Since DDT's widespread use was a significant factor in increasing agricultural output, the reason does indeed provide a correct explanation for the assertion.

### Step 4: Conclusion
Both the assertion and the reason are true, and the reason correctly explains the assertion. Therefore, the correct answer is that both the assertion and the reason are true, and the reason is the correct explanation of the assertion.

### Final Answer
Both the assertion and the reason are true, and the reason is the correct explanation of the assertion.

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