Immediately after she cast her vote, Rhonda was approached by a man from the local newspaper who asked her a series of questions about who she voted for and why. The reporter was conducting a/an:

Exit Poll

Explanation:

Exit poll is the process of asking voter, who have given their vote and are leaving the polling booth, who they have casted their vote to. It is one of the method to collect information and try to extrapolate vote distribution pattern and based on that infer the winner of the election. This also helps to evaluate sentiment of voter for candidates.