Which statement best describes a difference between presidential and parliamentary democracies? a. in a parliamentary democracy, the executive and legislative branches are joined. in a presidential democracy, the two branches are separate. b. in a presidential democracy, the head of government is a member of the legislature. in a parliamentary government, citizens directly elect the head of government. c. in a presidential democracy, citizens are able to vote for their legislators. in a parliamentary democracy, citizens are not able to vote for their legislators. d. in a parliamentary democracy, citizens vote directly for the head of government. in a presidential democracy, citizens do not vote directly for the head of government.