I am pretty sure that it is Philadelphia
Answer:
I can infer from the picture that the living conditions of the working poor were at poverty level. Sadly, the children wore rags, had no shoes, & may have been homeless orphans living on the street. It also looks like these children had no one who cared about them.
I believe the answer is b, because the world is always changing and i don’t think it will ever stop. there will always be changes that we have to adapt to. so i think that ecosystems evolve over time slowly but surely.