I think most of it is just cultural conditioning, we play major key songs when we're happy and minor key songs when we're sad (though this is changing in modern music). Another part of it could be that minor chords have their midtones clash a bit more with there tonic notes than major chords, it sounds slightly "wrong" to our ears and takes away from the happy effect.
Answer:
C) influence the criteria by which the public evaluates political leaders conceal problems that actually exist.
Explanation:
The study by Shanto Iyengar and Donald Kinder in News That Matters: Television and American Opinion suggested that television news can influence the criteria by which the public evaluates political leaders conceal problems that actually exist.
I believe the answer is B
