Answer:
A). Confuse.
Step-by-step explanation:
As per the question, the word 'confound' would mean 'confuse' most nearly as per the context of the passage. The word 'confound' literally denotes 'lead to a puzzle or confusion by behaving or reacting contrary to the expectations.' The author attempts to imply the puzzling or confused state of Dr. Reefy's character and his constant inefficient or feeble attempts to help people as a physician. His inability to reach at meaningful conclusions or truths after the death of his wife is displayed through his his puzzled state which is direct in contrast to the intellect he possesses. Therefore, the word 'confuse' best supplements and accomplishes the meaning of the word 'confound' in the line.