You can color code your notes :) make up a color system
Answer:
Option A.
Explanation:
Memorization may seem like an answer, but the tendency for people who do memorize their speeches is that when they mess up, they repeat the phrase again and again, adding no variation to it. In contrast, you are free to do what you please with carefully prepared notes.
A source in which a researcher would most likely find unbiased information would be from an encyclopedia article.
Hope this helps!