Final answer:
Psychology is considered a science due to its employment of the scientific method, including hypothesis testing, experimentation, and reliance on empirical evidence.The correct option is c.
Step-by-step explanation:
The best argument opposing Adam's claim that "Psychology is not a science" is c) psychology is a science because of the methods it uses. Psychology is defined as the scientific study of mind and behavior and utilizes the scientific method to acquire knowledge. This approach includes forming hypotheses, conducting experiments, and basing conclusions on empirical evidence. The robustness of psychological research is affirmed by repeatable experimental results and peer-reviewed publication, characteristics which are foundational to all scientific disciplines.