The correct option is A Wealth
The words 'penury' refers to the state of being very poor or extreme poverty.
Option A, wealth refers to the state of being rich or having material prosperity.
Option B, abundance refers to the state or condition of having copious amount of something.
Option C, prosperity refers to the state of being successful.
Option D, surplus refers to having more than what is needed or used.
Thus, according to the meaning, the word 'wealth' is the farthest in meaning from the word 'penury'.