What percent of body weight is water approximately?

• A. Approximately 30-40%
• B. Approximately 40-50%
• C. Approximately 50-60%
• D. Approximately 70-80%

Answer: (C)

Total body water as a portion of body weight is about half to a bit more in a typical adult. In adults, water content is roughly 60% of body weight in men and a bit less in women because fat tissue contains less water. For a general adult population, the commonly cited approximate range is about half to a little over half, which corresponds to fifty to sixty percent of body weight.

That’s why this choice is the best: it aligns with the usual adult estimate that water makes up roughly fifty to sixty percent of body weight. The other ranges are not representative for most adults—thirty to forty percent would be too low, and seventy to eighty percent is too high for adults (though infants have higher water content, not typical for adult assessments).