Step 1: Understanding the Question:
We need to identify a standard industrial application of the noble gas Argon from the provided list.
Step 2: Key Formula or Approach:
Argon's chemical inertness and relative abundance make it the primary choice for creating protective, non-reactive atmospheres in high-temperature metallurgical processes.
Step 3: Detailed Explanation:
The most widespread industrial use of argon gas is as an inert shielding gas in arc welding processes like TIG and MIG, preventing the oxidation of molten metal by ambient air.
Step 4: Final Answer:
Argon is used for providing an inert atmosphere in welding, corresponding to option (C).