Answer:
D and B, Should be your answer.
Art classes promote important skills that transfer to a variety of areas.
This is a statistic ^
While many people appreciate art, the sad reality is that arts education is rapidly disappearing around the country.
This is a fact ^
And from my experiences, that really is a fact.
<span>B. nonrestrictive clause
Since it is nonrestrictive, it is not necessary and is set off by commas.
Hope this helps :)</span>
