Select the opposite of the given word: Demon
a. Charitable
b. Kind-hearted
c. Angel
d. Fair-minded

Hint: Antonyms are those words that have contrasting or opposite meanings to the given word.

Complete step by step answer:
Demon refers to an evil spirit or devil, whose opposite would be 'a good spirit’. For example- ‘In the movie, the demon had possessed her soul.’

Now, let us analyze the options given to us in this question:
Option (a.), 'charitable', refers to 'a person who gives.' Therefore, option (a.) is incorrect as it is not antonymous in meaning to ‘demon’.
Option (b.), ‘kind-hearted', refers to ‘a person who is good or kind’. Therefore, option (b.) is incorrect as it is not antonymous in meaning to ‘demon.’
Option (d.), ‘fair-minded', refers to 'a person who does not take sides'. Therefore, option (d.) is incorrect as it is not antonymous in meaning to ‘demon.’
Option (c.), ‘angel', refers to ‘a spirit of god.’

Hence, option (c.) is correct, as it’s antonym is ‘devil’, which is the meaning of the given word ‘demon.’

Note: Sometimes the given options in a question where we have to find the opposite of the given word do not exactly mean the opposite of the given word. If this happens, we have to select the option which is the most antonymous to the meaning of the word in the question.