When you read a text, and you only focus on the main ideas, you are able to increase your reading speed. This is because as you read, you are able to ignore those elements that are not important enough and instead focus on important ones that really affect the plot. Many details are overlooked, helping you finish a page faster. This is a good strategy to use when you have little time and a lot of information to read.
I believe the correct answer is B. Increases your reading speed. The reason for this is you are just shaming through what your reading to find the main idea, so you skip over the details that aren't that important.
