**Core Concept**
Pancreatic ductal dilatation and multiple strictures in the setting of chronic pancreatitis necessitate surgical intervention to relieve ductal obstruction and reduce the risk of complications.

**Why the Correct Answer is Right**
The correct answer is a surgical procedure that involves longitudinal incision of the pancreas, followed by multiple side-to-side anastomoses between the pancreatic ducts and the side of the jejunum, thereby relieving the obstruction and promoting drainage of pancreatic secretions. This procedure is beneficial in patients with multiple strictures and dilated pancreatic ducts, which are not amenable to endoscopic or percutaneous interventions. The longitudinal incision and multiple anastomoses facilitate the drainage of pancreatic secretions, reducing the risk of further complications.

**Why Each Wrong Option is Incorrect**
**Option A:** Pancreaticoduodenectomy (Whipple's procedure) is generally reserved for malignant lesions or complex pancreatic pathology, which is not indicated in this case.

**Option B:** Puestow procedure involves a longitudinal pancreaticojejunostomy, but it does not involve multiple anastomoses between the pancreatic ducts and the jejunum, making it less suitable for patients with multiple strictures.

**Option C:** Roux-en-Y pancreaticojejunostomy is a type of pancreaticojejunostomy that involves creating a pancreaticojejunal anastomosis, but it does not involve multiple anastomoses or a longitudinal incision of the pancreas, making it less suitable for this case.

**Clinical Pearl / High-Yield Fact**
In patients with chronic pancreatitis and multiple strictures, surgical intervention should aim to relieve ductal obstruction, promote drainage of pancreatic secretions, and reduce the risk of further complications.

**Correct Answer: C.**