Answer :
Final answer:
In the FDNY F-89 study booklet, the affected area in the FLSD On-Site Test is related to measuring burn severity using the rule of nines.
Explanation:
The affected area, in the context of the FLSD On-Site Test according to the FDNY F-89 study booklet, refers to the total surface area on a person's body that has been impacted by burns.
The rule of nines is used to measure burn severity based on the percentage of the affected areas on specific anatomical regions of the body in multiples of nine.
For example, if a person's torso and legs each represent 18% of the body surface, these areas together would constitute 36% of the total affected area, according to the rule of nines.
