He is the most prudent person. I have ever came across.

Answer: Option B

prudent : acting with or showing care and thought for the future.
shortsighted : narrow-minded.
reckless : heedless of danger or the consequences of one's actions.
inconsiderate : thoughtlessly causing hurt or inconvenience to others.
injudicious : showing very poor judgement.


Antonym of prudent is reckless