By how well he or she does the job
Answer:
Correct sentence: Christopher Columbus, born in Genoa, never did reach mainland North America.
Correct Answer: the phrase "born in genoa" should be set off by commas because it's nonessential information
hope this helps! <3
This is called using context clues.
Adult Learning and Teaching (degree program) ALT. Assistant Language Teacher. ALT. Argon Laser Trabeculoplasty.