President clinton wanted the u. s. to become involved with the protocol, but it has never been brought before the senate for ratification.

a. madrid
b. helsinki
c. kyoto

C.Kyoto

Explanation:

The Kyoto Protocol was a treaty signed between developed countries in the 1990s, when US President was Democrat Bill Clinton. The Kyoto protocol required more developed countries to reduce their greenhouse gas emissions. Clinton postulated the United States to sign the deal, but there was resistance in the Senate, which never filed. Clinton's replacement George W Bush was against the treaty because he said the treaty was detrimental to the US economy.