The architect's most ambitious project was finally completed after seventeen years of construction ______ a soaring cathedral whose stained-glass windows depicted the entire history of the surrounding region.
Which choice completes the text so that it conforms to the conventions of Standard English?
- Acheck_circle
:
- B
—
- C
;
- D
(empty)
Explanation
A colon best introduces a noun-phrase elaboration of "the architect's most ambitious project" after an independent clause. An em-dash would also work but is less formal; a semicolon requires an independent clause; " " is a run-on.