Final answer:
In a philosophical context, the 'movement' likely refers to the conceptual change or development. 'The idea' is the answer that fits best with the philosophical notion of ideal forms that become evident through dialectical reasoning. Therefore, the correct option is B. The idea.
Step-by-step explanation:
The question seems to be asking about what is conceptualized or theorized to experience movement or change within a philosophical context. According to the information provided, philosophers offer definitions or conceptual claims in their arguments.
An example given is the conceptual claim that "The idea of God includes perfection." Moreover, arguments may include empirical evidence or principles as premises. A principle is defined as a general rule or law that can exist in any domain. Lastly, the reference to ideal forms, questioning, and dialectical reasoning aligns with Platonic thought, which suggests that these forms are inherent and become evident through critical thinking processes.
Therefore, in the context of philosophical discussion, when referring to something that was going to move in his example, the idea is the most likely answer. This is because in philosophy, especially within the Platonic framework, ideas are considered dynamic entities that can be revealed or developed through dialectical reasoning.