Your boss Ron looks over your list of possible keywords to add into the Keywords tool, and tells you to double the size of the list. All of the following are ways to expand that keyword list EXCEPT:
A) Duplicate your list and add quotation marks or brackets around keywords
B) Use an outside tool, like Google Keyword tracker
C) Use the Get Suggestions button in the Keywords tool
D) Type a keyword into a search engine and see which alternatives to that keyword ar shown in the results
https://www.youtube.com/watch?v=QAJwcOhea-E