Practicing scales for hours each day ______ a level of dedication that few young musicians are willing to sustain.
Which choice completes the text so that it conforms to the conventions of Standard English?
- A
are requiring
- Bcheck_circle
requires
- C
require
- D
have required
Explanation
The subject is the gerund phrase "Practicing scales for hours each day," which is treated as singular. "Requires" agrees.