The loss of his eye-sight
<span>A.
They remind him of a happier, more humane past.</span>
Answer:
basically, the quote is saying to take the unlucky bad things and make something good outta it. when life gives you lemons means when life gives you hardships. you make lemonade means you make something good out of the hardships. Hence the meaning of "when life gives you lemons you make lemonade."
Explanation:
The answer is C - exists in thought or as an idea, but does not have a physical existence.