I have a feeling that the answer is A.
I'm not sure though, I don't know the story
Answer:
Clear as mud?
Let’s deconstruct an example from the great Winston Churchill. All the power words are underlined:
We have before us an<u> ordeal</u> of the most <u>grievous</u> kind. We have before us many, many long months of <u>struggle</u> and of <u>suffering</u>. You ask, what is our policy? I can say: It is to wage <u>war</u>, by sea, land and air, with all our <u>might</u> and with all the<u> strength </u>that God can give us; to wage<u> war against </u>a monstrous tyranny, never <u>surpassed</u> in the dark, lamentable catalogue of<u> human crime</u>. That is our <u>policy</u>. You ask, what is our<u> aim?</u> I can answer in one word: It is <u>victory, </u>victory at all costs, victory in spite of all<u> terror, victory</u>, however long and hard the road may be; for without victory, there is no <u>survival.
</u>
Inspiring, right?
Hey there!
The answer is "In fact, ASL is a valuable language for many hearing people to learn"
This sentence states the main point. One might think that the answer is actually "One way learning American Sign Language is invaluable is because it makes communication possible for many different people", but this is NOT correct. This is a supporting detail. The main statement is when the author first introduces the topic.
Have a super awesome day! :)