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

the safest utility knife has what type of blade? plastic self - retracting replaceable folding
Answer
Brief Explanations:
Self - retracting blades reduce the risk of accidental cuts as they automatically retract when not in use, minimizing exposure of the sharp edge. Plastic blades may not be as effective for many utility tasks, replaceable and folding blades still have exposed sharp edges when in use.
Answer:
B. self - retracting