## **Core Concept**
Pasteurization is a process that applies heat to eliminate pathogens from liquids such as milk and juice. It is a form of **partial sterilization** that reduces the microbial load, making the product safer for consumption. This process is named after Louis Pasteur, who developed it.

## **Why the Correct Answer is Right**
The correct answer, **C. partial**, is right because pasteurization involves heating liquids to a high temperature for a short period, followed by rapid cooling. This method kills **pathogenic microorganisms** and reduces the number of **non-pathogenic microorganisms**, but it does not eliminate all microbial forms, such as **bacterial spores**. Therefore, it is considered a form of partial sterilization.

## **Why Each Wrong Option is Incorrect**
- **Option A: complete** - This is incorrect because complete sterilization would eliminate all microbial life, including bacterial spores, which pasteurization does not achieve.
- **Option B: sterilization** - This is incorrect because sterilization implies the elimination of all microbial life, which is not what pasteurization accomplishes.
- **Option D: intermittent** - This is incorrect because pasteurization is not described as an intermittent process; rather, it is a controlled, continuous process.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that pasteurization does not make a product **sterile** but significantly reduces the risk of infection from pathogens like **Salmonella**, **E. coli**, and **Listeria**. This process is crucial for ensuring the safety of dairy products and juices.

## **Correct Answer:** C. partial