เฉลยแนวข้อสอบ Google AdWords Fundamentals – Your client wants to improve her ad position. What would you recommend?

เฉลยแนวข้อสอบ Google AdWords Fundamentals –
89. Your client wants to improve her ad position. What would you recommend?

a) Make the ad heading longer and more descriptive
b) Improve the ad quality and increase bid amount
c) Improve Quality Score and decrease bid amount
d) Add more keywords and increase daily budget