Answer :
Final answer:
The most common and simplest type of welding today is Arc welding due to its low operating costs and versatility. It is used with a variety of metals and alloys.
Explanation:
The most common and simplest type of welding today is b) Arc welding. Arc welding, also known as Shielded Metal Arc Welding (SMAW), uses a welding power supply to create an electric arc between an electrode and the base material to melt the metals at the welding point. This type of welding is widely used because of its low operating costs and versatility, as it can be used with a variety of metals and alloys. There are other types of welding as well, such as gas welding, resistance welding, and flux-core welding, each with their specific applications and characteristics.
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