Question

please note: leaving this page before submitting your assessment w the number of allowed attempts, you will be locked out of your course 2) the no. 1 cause of fumes is ______. a) filler metals b) heat c) electricity d) bad weather

Explanation:

In welding and similar industrial processes, the primary source of harmful fumes is the vaporization and combustion of filler metals (like welding rods/wires) which release particulate matter and chemical fumes when heated. Heat and electricity are tools to enable the process, not the direct cause of the fumes, and bad weather has no direct link to fume generation in this context.

Answer:

a) Filler metals