In pharmacodynamics, the biggest effect that a medication can have is called maximal efficacy. This term indicates the peak response of a drug when administered at a sufficient dose. It is a crucial measure for assessing a drug's effectiveness in treatment. ;
In pharmacodynamics, maximal efficacy refers to the greatest effect a medication can have in the body. This term is important for understanding how effective different medications can be in treating conditions. Thus, the answer to the question is C. Maximal efficacy.
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