Question

this can change the fit of your respirator. a mustache a beard weight gain all of the above 5 of 25

Explanation:

A mustache, beard, and weight gain can all alter the shape and dimensions of the face - area where a respirator fits. A mustache or beard can create gaps between the respirator and the face, and weight gain can change the overall facial contour, affecting the fit.

Answer:

D. All of the above