Final answer:
Minerals account for approximately 4% of the body's total weight, which includes essential elements needed for proper bodily functions.
Step-by-step explanation:
The question pertains to the percentage of minerals in the human body in relation to its total weight. According to provided information, minerals represent only about 4 percent of the total body mass. These minerals include essential elements such as potassium, sodium, calcium, phosphorus, magnesium, and chloride, which the body needs for proper functioning. Therefore, the correct answer to the question, "Minerals account for how much of the body's total weight?" is b) 4%, which is not explicitly listed among the given options a) 2%, b) 5%, c) 10%, or d) 20%.