Answer:
The correct answer is Oxyacetylene Welding (OAW).
Step-by-step explanation:
Oxyacetylene welding is a type of autogenous welding. It can be carried out as a homogeneous welding, due to the fusion of pieces, either with or without material contribution depending on whether or not the contribution material is of the same type as the base; or without material contribution as autogenous welding.