The correct answer is C, as the Honest Leadership and Open Government Act affects lobbying in the United States as it prohibits lobbyists from giving gifts to legislators.
This law was sanctioned in 2007, during George W. Bush's administration, and, among other things, it prohibits lobbyists from giving gifts to members of Congress as a way to convince them to support their petitions.
The answer is A since they did show how mathematics and measurement could be used in scientific investigation
The answer is B)many southeast Asian countries depended on the plentiful gold supply to make them wealthy .
The correct answer is money supply.
The money supply includes all monetary assets that are available in an economy at a specific time period. If the money supply drastically increases then inflation happens and if the money supply decreases then deflation happens. Both can cause horrors for the economy so the economists have to be careful.