Dr. Quinn is a researcher. He is seeking subjects for a research study that involves experimental treatments. He talks to Janna, one of his patients, about participating. Based on Dr. Quinn s demeanor, Janna feels coerced and believes she does not have a choice about participating in the experimental treatment. The contract between them may be void based on which defense for nonperformance?
a. Illegality
b. Duress
c. Mistake of fact
d. Fraud