For your first question about where people live in Europe, the statement that best describes this is: "Population is concentrated on the coast and in river valleys." This is generally true as urban areas, ports, and fertile land near rivers tend to attract larger populations.
For your second question regarding the graph, I would need to see the graph in question to provide an accurate interpretation. If you can describe the graph or give more details about the data it presents, I’d be happy to help you analyze it!