The correct option is C face a situation boldly
The given passage is about the qualities of physical courage and moral courage, and that the speaker has seldom seen a man possessing both these qualities. The speaker has rarely seen a man who possesses physical and moral courage, but at the same time he mentions that he has never met a man with moral courage who could not face a situation boldly when it was really necessary. This is clearly mentioned in the line "But I have never met a man with moral courage who couldn't, when it was necessary, face a situation boldly." Hence option C is correct. Option A is incorrect because it's not mentioned, or suggested by the passage. Option B is incorrect because overcoming all difficulties would require a man to possess both physical and moral courage, and it's mentioned in the lines "I have known many men, who had marked physical courage, but lacked moral courage" and "I have seen men who possessed moral courage but were very cautious about taking physical risks". Hence option B is incorrect. 'To be very pragmatic' means 'to deal with things sensibly and realistically'. This is the basis of moral courage, as mentioned "a more reasoning attitude ...is moral courage". It's the very essence of moral courage, and a person possessing this quality does not become pragmatic 'if the need arises'. Hence option D is incorrect.