The correct option is
C An attractive package to an island resort
Display ads use visuals to attract attention. They are costlier and are used for creating a brand image.
Option C: An attractive package to an island resort would contain strong visuals to attract a crowd. Pictures of the resort, the greenery around it, or various facilities like the spa can be easily displayed to catch somebody's attention.
Hence this type of ad would best be advertised through display advertisements, and option C is correct.
Option A: An old phone sale would be listed as a text ad and wouldn't require a display.
Option B: Job listings are not displayed, they use text ads. There is nothing to display in a vacancy.
Option D: A society celebration also would not use a display ad. It's a personal event and would use a notice.
Hence options A, B and D are wrong.