Option 1 -> Hidden hunger is about micronutrient deficiencies (zinc, iodine, iron), not protein deficiency.
Option 2 -> Hidden hunger is not caused by excessive food intake; it results from lack of essential micronutrients regardless of caloric consumption.
Option 3 -> Accurately captures that hidden hunger involves micronutrient deficiencies with non-obvious signs (people may appear healthy), whereas traditional hunger has more visible symptoms.
Option 4 -> The passage makes no distinction about time frames between these conditions.
Hence, Option 3 -> The passage explicitly states that "signs of this form of malnutrition are hidden as individuals may appear healthy" and that "clinical signs emerge only in extreme cases," distinguishing hidden hunger (micronutrient inadequacy with non-obvious symptoms) from traditional caloric deficiency which has more visible manifestations -> correct