**Core Concept**
Acute pancreatitis is a severe inflammatory condition of the pancreas characterized by autodigestion of pancreatic tissue and surrounding fat. The destruction of fat in acute pancreatitis is a critical aspect of the disease process, leading to the release of toxic substances and further inflammation.

**Why the Correct Answer is Right**
The destruction of fat in acute pancreatitis is primarily due to the activation of pancreatic lipase, an enzyme produced by the pancreas. When the pancreas is injured, the cellular membranes become permeable, releasing lipase into the surrounding tissue, where it catalyzes the hydrolysis of triglycerides into free fatty acids and glycerol. This results in the breakdown of fat cells, releasing toxic substances and contributing to the progression of the disease.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is not relevant to the destruction of fat in acute pancreatitis.
**Option B:** While trypsin is an enzyme involved in the pathogenesis of acute pancreatitis, it is not directly responsible for the destruction of fat.
**Option C:** The process of fat destruction in acute pancreatitis is not primarily due to the action of gastric lipase.

**Clinical Pearl / High-Yield Fact**
Pancreatic lipase plays a critical role in the destruction of fat in acute pancreatitis, and its activation is a key event in the disease process.

**Correct Answer:** C. Activation of pancreatic lipase.