what does thorough cleaning between overlapping stringer beads prevent?\narc blow\narc wander\nundercutting\n…

Brief Explanations:

In welding, slag inclusions can occur when there is improper cleaning between overlapping stringer beads. Thorough cleaning helps remove contaminants and debris that could lead to slag getting trapped in the weld. Arc blow, arc wander, and undercutting are not directly related to lack of cleaning between stringer beads in this context.

Answer:

slag inclusions