What do you think about my idea? Is the best choice because it allows for constructive criticism.
Answer:
D) For instance
Explanation:
This type of phrase tends to be a part of an example type sentence. The others are carrying off of a previous sentence, and leads to a result detail.
The inclusion of reputable sources and specific facts would best strengthen the author's main argument because it would offer factual proof instead of just the author's opinion on the matter.
