Quite simply, the legislative branch's job is to make the laws of the country. The executive branch's job is to execute the laws made and to handle tasks as directed by the Constitution. The judicial branch's job is to make sure everyone is playing by the rules.
Businesses and citizens acted in their individual best interest. Many people blamed Hoover because he was president at the time, but it was not his fault because the people of that time acted under their own interest and no one volunteered.
Answer: The Spanish said the rafts were in the shape of the extended fingers of a hand. The large balsa logs, lashed together with henequen fiber, formed the main deck of a raft. Seawater passed freely between and over the logs making it very difficult for rafts to be swamped by heavy seas.
I believe the answer here is going to be A!
Hopefully, this helps. =)