Question

the safest utility knife has what type of blade?
self - retracting
plastic
replaceable
folding

Explanation:

Self - retracting blades reduce the risk of accidental cuts as they automatically retract when not in use, making them the safest option among the choices. Plastic blades may not be as effective for many utility tasks and are not inherently the safest in terms of preventing injury during normal use. Replaceable and folding blades still pose risks if not handled properly.

Answer:

self - retracting