Which statement best describes Dalton's Law of Partial Pressures?

• A. The total pressure in a container is the difference between the highest and lowest partial pressures.
• B. The total pressure in a container is the product of the partial pressures of each individual gas.
• C. The total pressure in a container is the average of the partial pressures of each individual gas.
• D. The total pressure in a container is the sum of the partial pressures of each individual gas.

Answer: (D)