Answer:
Option C. The ability to view searches for terms in real-time
Explanation:
The manufacturer wants to know the locations and times at which the sports are popular. Since he is interested in the locations, the trend - tracker should be able to filter the results by geographic location.
It is possible that searches are not made with the exact names of the sport, the trend - tracker should be able to identify searches that are made with words synonymous to the names of the sports.
The manufacturer also wants to know the times at which these sports are popular. This means that the dates of various searches have to be recorded and the trend - tracker should have access to it. The dates with the most number of searches will suggest the periods at which these sports are popular.
Searches does not have to be viewed at real times because the dates of those searches can consequently be tracked to get the needed information. Therefore, option C is the least likely to be useful.
