I would have to say A woulod be the best choice.
I would use it by putting money towards cures for sickness many suffer from
The type of figurative language is idiom
Answer:
A. Most people seemed to respond to the candidate's charisma rather than to his political agenda.
Explanation:
The definition you want to use is "A magnetic charm that appeals to people.
With answer 'a', this statement basically is telling how people react to the candidate's personality outside of his political agenda. Making him seem more charismatic.
I don't if this answer was really any help to you, I hope you understand a bit of it though.