For long welding runs, either the "back-step" or the "skip" welding technique is often used. For what purpose are these techniques utilized?

Correct Answer: Option B — These techniques are used to help minimize distortion.

Back-step and skip welding techniques are specifically designed to distribute heat more uniformly across the weldment. By breaking the weld into smaller, non-continuous segments or reversing the direction of travel, these methods prevent the buildup of excessive localized thermal stresses, thereby significantly minimizing the distortion of the base metal plates.