Final answer:
Kant believes that what makes humans special is their ability to think rationally, exercise agency, and act based on reason, which distinguishes them from animals.
Step-by-step explanation:
Kant's view on what makes humans special lies in their ability to think rationally and exercise agency. According to Kant, animals are driven by impulses and therefore lack rationality, whereas humans can rise above their instincts and act based on reason. This distinguishes humans from other beings and grants them freedom and free will. Kant referred to this ability to act rationally as a 'good will'.