Step 1: Concept
Certain trace elements act as essential components or stabilizers for hormone production.
Step 2: Meaning
Insulin is a peptide hormone produced by the beta cells of the pancreatic islets.
Step 3: Analysis
Zinc is essential for the synthesis, storage, and secretion of insulin. Six molecules of insulin are coordinated around two zinc ions to form a stable hexamer in secretory granules.
Step 4: Conclusion
Zinc is the specific mineral required for insulin-related processes in the pancreas.
Final Answer: (C)