_______ country was ranked at the bottom of the Climate Change Performance Index 2021 ?

a) US
b) Russia
c) Canada
d) Australia

The United States, which is the largest historical polluter, was ranked at the bottom of the Climate Change Performance Index for the second time in a row. While the US was ranked 61st, Saudi Arabia was ranked 60th, Iran 59th, Canada 58th, Australia 54th and Russia 52nd.