Question

holds the col-let and helps direct shield-ing gas toward the nozzlea. ceramic nozzle (cup)a metal screen attached to a collet body to improve shielding gas coverageb. gas lensc. back capd. collet bodydirects shield-ing gas around the weld area

Explanation:

The question describes components related to welding equipment. A gas lens is a metal screen attached to the collet body that improves shielding gas coverage by creating a more uniform gas flow. The other options have different functions: the ceramic nozzle directs gas around the weld area, the back cap holds the collet, and the collet body holds the collet and guides gas toward the nozzle.

Answer:

b. gas lens