Final answer:
Logos, the appeal to logic and reason, was common in colonial era rhetoric due to the belief in Rationalism.
Step-by-step explanation:
The question asks which type of rhetorical appeal was common in colonial era rhetoric because of the prevalent belief in Rationalism. The correct answer is d) Logos, which is an appeal to logic and reason. During the colonial era, many arguments were constructed based on rational thought, using credible information, such as facts, reasons, or examples, presented as evidence toward a sensible and acceptable conclusion. This method of persuasion aligns with the principles of Rationalism, which values knowledge that is gained through reason and evidence.