An advertiser wants to increase the Quality Score of a low-perofrming keyword. Which approach would you recommend

An advertiser wants to increase the Quality Score of a low-performing keyword. Which approach would you recommend?

• Repeat the keyword as many times as possible in the ad text.
• Delete the keyword and add the keyword to the campaign again
• Modify the ad associated with that keyword to direct to a highly-relevant landing page
• Increase the daily budget for the campaign in which the keyword is located

Correct answer is:

• Modify the ad associated with that keyword to direct to a highly-relevant landing page

Explanation: In order to increase the Quality Score of a low-performing keyword, you must modify the ad associated with that keyword to direct to a highly-relevant landing page. You’ll want to improve the relevance of your keywords to help boost their Quality Scores, or modify the match type for ones that aren’t helping you meet your advertising goals, or delete duplicate keywords in your account.

Read more here: https://support.google.com/adwords/answer/2453976?hl=en