Answer:
Enlarge them or project them.
Step-by-step explanation:
Alexis can either enlarge the photos and print them out on an A4 scale page and display it while giving her speech or she can request a projector. If a projector is available then Alexis can project the pictures of her recent trip to Greece during the speech about Modern Greek culture. The idea is that Alexis should make the pictures visible and the audience should be able to see what is being highlighted in those pictures. The pictures should aid the point presented in the speech and then can only be done if they are visible to the audience.