I have no idea lol but people jus like arguing
Answer:
underestimate.
Explanation:
The reasons for rescue failure can be referred to by the mnemonic FAILURE. In this mnemonic the "U" stands for underestimate because underestimating the incident can lead to failure of rescue operation.Therefore in mnemonic FAILURE U stands for underestimate.
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I believe the answer is D mainly based off the wording. The question says "Devices" And the only answer with devices involved would be D, Personal protective equipment.