larry's house has caught fire, and he is trapped inside. the neighbors called 911. two firefighters and one of the neighbors (an accountant) entered the house in an attempt to save larry. another neighbor tore away the screening around larry's porch so that his dog could run to safety. the neighbor who entered the burning house was frightened but had always valued the concept of heroism. now faced with the opportunity, he chose to act heroically. in this example, heroism is an example of a(n):