A new graduate nurse preparing to administer medications knows that which of the following is required for a drug to move through the body?

Choice A reason: A transporter shell is not a pharmacological concept; drugs use transport proteins or diffusion. Membrane crossing is key, so this is incorrect for drug movement. Choice B reason: Selectivity and effectiveness define therapeutic action, not physical movement. Drugs must cross membranes to reach targets, so this is incorrect. Choice C reason: Drugs must cross cell membranes to move through the body, affecting absorption and distribution. This is a fundamental requirement, making it the correct choice. Choice D reason: An electric charge may influence solubility but isn’t required for movement. Membrane permeability is essential, so this is incorrect for drug pharmacokinetics.