Read the following sentence from the textbook that expresses the main idea about china's official policies. then choose the statement that offers evidence that supports that main idea.
'democratic governments continue to raise concerns over chinese human rights.'

a.) as china's economy has grown, so have political freedoms for its citizens.
b.) capital punishment is the penalty for a long list of crimes in china.
c.) china has adopted numerous economic reforms that have benefited from individual citizens.
d.) the main role of the communist party in china is to govern, not to mobilize citizens to vote.