Answer:
pictures: to preserve memories
people: to protect our lives
clocks: to protect the hands
animals at zoos: it protects them from people irritating them and it also protects the people
radiologists: the glass protects them from the rays that they use to x-ray
The predicate nominative in this sentence is: Reward
...Since like there is alot of stuff going on in the world today like violence and stuff maybe like how you would try to fix the problem.