Answer:
B) reach.
Step-by-step explanation:
Sine the marketing campaign will only last 45 days, it will be very short, and the potential audience is very large. Also during Holiday season a lot of campaigns are launched, so EA's campaign will have competition. So the ad agency must be very concerned with reaching a high percentage of their target audience. They want to produce a high market share and in order to do so, they must reach a lot of people.
In advertising, reach means how many people or households are exposed to your marketing campaign.