Solution
✅ Correct Option: 2
The passage calls nutritional poverty 'a quieter, more pervasive deprivation' that, unlike income poverty visible in statistics, stays hidden in blood reports and fatigue. Of the given choices, only 'hidden from public statistics' matches this contextual sense; the others wrongly restrict it to one area, one metric, or one group.
Note: 'Pervasive' literally means widespread, but no option says so. We have chosen the option consistent with the passage's contrast with visible statistics, which appears to be the intended answer.