The best way to optimise your ad quality score is by improving the relevance of your keywords, adverts, and landing pages. If your ad is highly relevant to the keyword a user is searching for, then you will be at the top of the search results page if you bid the same amount as your biggest competitor.
Optimising the relevance of your landing page is also important. You should make sure that the landing page copy shares the same message as that of your ad copy.
This question is a part of the Google Digital Unlocked and Google Digital Garage Certification exams. You can find all the latest updated questions and answers to both exams on our website in the Google Digital Garage and Google Digital Unlocked pages.