Final answer:
The statement that obese people have a lower percentage of body water because fat tissue contains less water is true, as adipose tissue is primarily made up of cells that store fat with minimal water content.
Step-by-step explanation:
The statement that obese people tend to have a lower percentage of body water is true. This is because fat tissue, or adipose tissue, contains less water than any other tissues in the body. Adipose tissue is largely made up of cells called adipocytes, which store fat in the form of triglycerides.
Additionally, water content varies inversely with fat content, and adipose tissue consists mostly of fat-storage cells with little extracellular matrix.
As a result, an increase in adipose tissue, as seen in obesity, corresponds to a lower proportion of body water. Hence, the higher the fat content or mass, the lower the percentage of body water.