Body Mass Index (BMI) is a screening tool that uses height and weight to estimate whether a person’s weight category may pose health risks. Standard BMI categories commonly used in health education classifyunderweightas a BMIbelow 18.5,healthy weightas18.5–24.9,overweightas25.0–29.9, and obesity at higher values. Based on these categories, the range that aligns with underweight among the given choices is14.5–18.5 (D)because it falls at and below the 18.5 cutoff (with most of the range being below 18.5).
OptionB (18.5–24.9)is the typical healthy-weight range. OptionC (25.0–29.9)matches the overweight category. OptionA (10.0–14.5)is extremely low and may indicate severe underweight, but the question asks for the BMI range “associated with being underweight” in general; the broader underweight-related range offered isD.
From a wellness perspective, being underweight can be linked with concerns such as reduced energy, nutrient deficiencies (iron, calcium, vitamin D, B vitamins), lowered immune resilience, or decreased bone density—especially if underweight results from inadequate intake or underlying medical issues. That said, BMI is a screening measure, not a diagnosis: it does not directly measure body fat, muscle mass, or overall health. A person with a low BMI who is experiencing fatigue, frequent illness, or unintended weight loss should be assessed by a healthcare professional to identify causes and appropriate nutrition strategies.
