The Library of Alexandria once held hundreds of thousands of scrolls ______ scholars are still uncertain how it was ultimately destroyed.
Which choice completes the text so that it conforms to the conventions of Standard English?
- A
(empty)
- B
, and
- C
,
- Dcheck_circle
;
Explanation
A semicolon correctly joins these two independent, related clauses. Space alone is a run-on; a comma is a splice; ", and" is acceptable but the semicolon is more concise and matches the absence of explicit conjunction.