Answer:
the correct option is B and C
The Library of Congress is one of the biggest database of publications of a wide array of subjects and courses existing in the world. It is a useful site because of the statement found in option B. it has become one of the most credible and trusted sites which scientists depend.
The 2nd one.
There's a certain slant of light,
On winter afternoons,
That oppresses, like the weight
Of cathedral tunes.