Well, think about a very important, special change that happened in your life. Make sure to be specific though.
Answer:
It showes confidense in your decisions
Explanation:
"A prop is worth a thousand words" would mean that a carefully selected prop could explain the situation better than to use words to explain it. The expression is similar to that of - a picture is worth a thousand words, they mean the same, basically.
I strongly believe that it is B. I know it isn't D because it doesn't compare or contrast asthma to something else.