Question

There are several ways to improve your writing; ___ , you can try to use an outline.

 above all
 for instance
 meanwhile
 consequently

Answer 1

The best option to fill in the blank in the sentence is "for instance."

So the complete sentence would read: "There are several ways to improve your writing; for instance, you can try to use an outline."

This choice introduces a specific example of a way to improve writing.