What is the outlook for physical oceanography?

How would i answer this for an exam?

Mexico city is an example of how humans alter their environment because it was a. one of the world’s largest cities b. built on drained and filled lake beds c. built after conquest by the spanish d. once the capital of the aztec empire

The language and religion of france developed from which people? a. the franks b. the gauls c. the anglo-saxons d. the romans