Answer:
Technician B
Explanation:
A HEPA or high-efficiency particulate Type filter is capable of capturing 99 percent of particles that are 2 microns or larger, high-efficiency particulate airsuch as pet dander and DUST. So this is the best answer. I hope you find this helpful!
Optical squares are simple sighting instruments used to set out right angles. They can be provided either with mirrors or with one or two prisms. Because of practical difficulties in using squares with mirrors, they have been replaced by squares with prisms: "prismatic squares".
