Under President Obama's leadership, the US is advancing policies that address climate change by promoting energy efficiency in our homes, cars and businesses, increasing the domestic production of clean energy—including biofuels—and by investing in renewable energy technology. ...The United States is also vigorously engaged in international climate negotiations while continuing to work with Congress on domestic climate legislation..
B is the correct answer because A makes the reader believe that the two Notaries preferred ether of the options rather than specifying they each chose only one type.
