Final answer:
The writer's ability to effectively communicate and engage the audience with unique and well-crafted strategies suggests that the excerpt's effect is that his idea stood out due to its uniqueness.
Step-by-step explanation:
Based on the excerpts provided, it appears that the writer of "Standing out in a Crowd" has a keen understanding of effect on audience, utilizing rhetorical strategies to communicate with clarity and purpose. Assessing the excerpts and the potential effects they could have on the audience, the most fitting answer seems to be option a) His idea was really good and unique, so it stood out, as it relates to the uniqueness and effective communication of the thesis within the excerpt. The writer employs techniques like message targeting, which engages the audience with specific, salient issues and using compelling anecdotes about cultural icons such as Barack Obama to illustrate the impact of well-crafted campaign strategies on audience engagement.