The correct answer is A. Morally right
Step-by-step explanation:
The word "righteous" is a synonym for morally correct or virtuous. This means when a person is said to be "righteous" is because he/she acts and behaves following ethics and moral. and therefore he/she is a good person. This is the opposite of being morally corrupt, riotous or incapable because all of these words are used to refer to someone that does not follow moral/ethics or does not understand these principles. According to this, a righteous person can be defined as morally right.