The measure part of President Taft's dollar diplomacy in Honduras for U.S. control over railroads in exchange for guaranteeing independence was rejected by the Honduran legislature under the Davila regime.
The option (1) is correct.
The final outcome of President Taft's dollar diplomacy efforts in Honduras was that the measure for U.S. bankers to guarantee Honduran independence in exchange for control of the railroads was rejected by the Honduran legislature under the Davila regime.
This rejection indicates a push back against the economic influence the U.S. sought through its dollar diplomacy policy, which aimed to use economic power and investments to secure American interests and promote stability in the region. It also reflects the overarching trend of resistance from Latin American countries against policies perceived as economic imperialism.