Answer :
Final answer:
TIG welding is the preferred method for welding aluminum, providing stronger and higher quality welds due to its precise control and the use of an inert shielding gas.
Explanation:
The preferred method for welding aluminum is c) Tungsten inert gas (TIG) welding. This method uses a non-consumable tungsten electrode to produce the weld. The area being welded is protected from atmospheric contamination by an inert shielding gas, such as argon or helium, and a filler metal is often used as well. TIG welding is particularly well-suited for aluminum because it allows for stronger and higher quality welds. Gas welding and resistance welding are not commonly used for aluminum because they can be less precise and might lead to weaker welds. Arc welding can be used, but TIG welding provides better control when dealing with the unique properties of aluminum.
