Answer:
c. in a mixture of gases like air, the total pressure is the sum of the individual partial pressures of the gases in the mixture.
Explanation:
Dalton law is also known as Dalton's law of partial pressure. It simply explains that the total pressure exerted by a mixture of gases in a container is the sum of the individual gas pressure (partial pressure) exerted by each of the gases.
Hence, the correct option is C.