Step 1: Concept
An emulsion is a mixture of two or more liquids that are normally immiscible (like oil and water).
Step 2: Meaning
Without intervention, these liquids will eventually separate into distinct layers.
Step 3: Analysis
An emulsifier (or emulgent) is a substance that stabilizes an emulsion by increasing its kinetic stability, preventing the droplets from coalescing.
Step 4: Conclusion
The primary role of an emulsifier is stabilization.
Final Answer: (C)