Answer :
Final answer:
In an adult weighing 165 lb, around 55 lb is water, which is roughly 50-60% of the total body weight. So, the correct answer is option b) 55.
Explanation:
In an adult of normal body composition weighing 165 lb, approximately 55 lb is water. Human beings are composed mostly of water; this percentage can vary depending on factors such as age, body composition, and hydration level. In general, adults can have about 50-60% of their body weight comprising water. Body water content is distributed throughout intracellular and extracellular spaces, including significant portions in organs such as the brain and kidneys.
