Question

1. what hurt hoovers popularity most during the campaign?

new taxes

the attack on the bonus army

new tariffs

bank failures

Explanation:

During Herbert Hoover's re-election campaign, the violent dispersal of the Bonus Army (WWI veterans demanding early payment of their bonuses) by federal troops was a highly visible, controversial event that damaged his public image significantly more than the other listed issues, as it was seen as a harsh, uncompassionate response to struggling Americans during the Great Depression.

Answer:

the attack on the Bonus Army