Fernando favors capital punishment. his attitude began to change when he was asked to offer arguments opposing it in a university debate class. his attitude change is best explained by theory.

His attitude change is best explained by Cognitive Dissonance Theory

Cognitive Dissonance Theory is best explained in this way:

Have you ever told a lie and feel uncomfortable because you see yourself as an honest person? It is then that you realize that you have experienced cognitive dissonance.

Or,

You see yourself as a smart person but can't even believe that you made such dumb stock investments!

It is c commensalism

The  ancient egyptians  who  built the pyramids  may have been  able  to move massive stone blocks across the desert by wetting the sand in front of a contraption  built  to pull the heavy objects