Answer:
A historical traitor, Benedict Arnold, betrayed his country in a time of war
Explanation:
An apposition is an addition to a noun that otherwise (using new data) says what the noun means. In the speech, the apposition is separated by a pause, and in writing by commas.
Example: Maria, my cousin, arrived in New York.
'My cousin' is here in a function of the apposition, as 'Benedict Arnold' is in the previous sentence.
