Technician a says that glues are used to gaskets seal. technicians b says that deburring all sharp edges is an important step that must be done to achieve proper engine assembly. who is correct?

Technician B is correct

Explanation:

For gaskets to seal up an opening properly and avoid external objects like water and oil mixing up in the engine of the vehicle, it is optional that little glue sealant is to be applied between the surface of the engine part and the Gasket but this is generally necessary so technician A is wrong.

Deburring all sharp edges before assembling an engine is  completely true because deburring means smoothing of rough/sharp edges left on metals that was been cut. this process helps to keep the technician safe from work accidents and fro the easy assembling of the Engine