Answer:
D 7
Explanation:
Since he took 8 photos of wildlife, he took 4*8, or 32 photos of his friends, taking 8+32=40 photos in total. 40 photos/6 photos per page = 6 and 2/3 pages. However, he cannot have a partial page, and he needs to fit all the photos, so you round up to 7 pages.