Why did Brody want the beaches closed on Jaws?

1 to keep people out of danger 2 no humans in the water means less food for the shark it might move away 3 easier to lure shark out so that it may be killed 4 shows how the need for tourists effects those people who make money from them i,e its safe now wont happen again we killed a big shark for you to see errr ok we are guessing its the right one watch the movie makes for easier homework better than algebra anyday