Answer: allows him to reach over 90% of global internet users across more than three million apps and websites.
Step-by-step explanation:
The options to the question are:
a. it allows him to reach over 90% of global internet users across more than three million apps and websites.
b. It allows him to identify valuable audiences and collect statistical usage data from the websites where his ad appears.
c. It allows him to select for new audiences and scale down his advertising to appear on specific websites that he chooses.
d. It allows him to isolate valuable audiences regionally and convert local sales the first time his ad is seen.
Display ad campaigns are often image, text-based, or video advertisements which allows users click-through to landing page and then take necessary action such as making a purchase.
It should be noted that using the display and campaign can help Bill reach over 90% of global internet users across more than three million apps and websites. This enable him reach a larger audience.