An advertiser wants to increase the Quality Score of a low-performing keyword. Which approach would you recommend?
Delete the keyword and add a synonym of the keyword to the campaign
Modify the ad associated with that keyword to direct to a highly-relevant landing page
Delete the keyword and use Keyword Planner to find more Relevant keywords
Set an ad group bid adjustment of +20% for the keyword
Find all AdWords Fundamentals Questions and Answers here.