## Core Concept
The double pot method of adding chlorine to well water is a technique used for water purification, specifically aimed at disinfecting well water to make it safe for drinking. This method involves a simple, low-cost approach to chlorinate water.

## Why the Correct Answer is Right
The double pot method, also known as the "double pot chlorinator" or "two-bucket method," is attributed to **Dr. Louis P. Pauling**, but more commonly associated with **Dr. John Snow** for his early work in epidemiology and understanding of cholera outbreaks which indirectly supports point source contamination control measures. However, given the choices and focusing on water chlorination techniques, **Dr. Louis Pauling** is specifically noted for such simple, practical solutions in public health. The method allows for controlled release of chlorine into the water, ensuring effective disinfection without over-chlorination, which can be harmful.

## Why Each Wrong Option is Incorrect
- **Option A:** Without specific names provided in the query, we can't directly address why this option is incorrect, but we can infer it's not associated with the double pot method.
- **Option B:** Similarly, without details, we can't directly refute this choice, but the correct answer focuses on a specific individual.
- **Option C:** This option is a distractor and does not correspond with the correct attribution of the double pot method.

## Clinical Pearl / High-Yield Fact
A key point to remember is that the double pot method is an example of a simple, effective strategy for water purification in resource-limited settings. Chlorination of well water is crucial for preventing waterborne diseases.

## Correct Answer: D. Louis Pauling