Final answer:
The correct option is (B). Solidification cracking due to an improper width-to-depth ratio of the weld bead is primarily associated with Shielded Metal Arc Welding (SMAW).
Step-by-step explanation:
Solidification cracking due to an improper width-to-depth ratio of the weld bead is primarily associated with Shielded Metal Arc Welding (SMAW).
SMAW, also known as stick welding, uses a consumable electrode covered in flux to create the weld. This process is more prone to solidification cracking due to the slower cooling rate compared to other welding processes.