**Core Concept**
Holder's method of pasteurization involves heating milk to 63°C for 30 minutes, followed by rapid cooling to 8°C. This process is designed to kill most bacteria, but some spore-forming bacteria can survive. The primary goal is to inactivate enzymes and kill vegetative bacteria while preserving the nutritional value of milk.
**Why the Correct Answer is Right**
The bacteria that can survive Holder's method of pasteurization are primarily spore-forming bacteria like *Bacillus* and *Clostridium* species. These bacteria produce heat-resistant spores that can withstand the high temperatures used in pasteurization. The spores are highly resistant to heat, allowing them to survive the 63°C temperature used in Holder's method.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not provided, so we cannot explain why it is incorrect.
* **Option B:** This option is not provided, so we cannot explain why it is incorrect.
* **Option C:** This option is not provided, so we cannot explain why it is incorrect.
* **Option D:** This option is not provided, so we cannot explain why it is incorrect.
**Clinical Pearl / High-Yield Fact**
Spore-forming bacteria like *Bacillus* and *Clostridium* can survive pasteurization and cause foodborne illnesses. This is why it's essential to use proper pasteurization techniques and store milk at refrigerated temperatures to prevent bacterial growth.
**Correct Answer:** D.
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