Final answer:
The false statement is that inhaled drugs cannot be absorbed into the bloodstream.
Step-by-step explanation:
The false statement among the options is C. Inhaled drugs cannot be absorbed into the bloodstream. In reality, inhaled drugs can be absorbed into the bloodstream because the respiratory tract has a rich blood supply. When drugs are inhaled, they enter the lungs and are able to diffuse across the alveolar membrane into the blood vessels, allowing for systemic absorption and distribution.