Final answer:
The list of three is effective because humans find concepts presented in three-part structures to be more memorable, persuasive, and easier to understand, aligning with natural cognitive patterns.
Step-by-step explanation:
The list of three is commonly used in English writing and speech because it tends to be more rhythmic, memorable, and persuasive. People naturally find a rhythm in threes to be pleasing, which is why three-point lists are often used in rhetoric and writing.
Option D, 'Because human beings naturally think in threes,' could be considered as the closest answer. It aligns with the principle of the 'rule of three,' which suggests that ideas or concepts presented in threes are inherently more interesting, more enjoyable, and more memorable. This principle is not just a random cultural artifact; it reflects a pattern of cognition where we can easily grasp and remember concepts in threes.
A triangle with three sides and angles summing up to 180 degrees is an example of such a cognitive pattern. Similarly, points made in threes, like rhetorical appeals (logos, ethos, pathos), are more likely to form a strong argument because they cater to different aspects and make the content more convincing.
Thus, when organizing information to make a point, using a three-part structure can be an effective way of reasoning and persuading the audience, whether in written or verbal communication.