|Question 20Verbal

Source Texts

Text
The Timeline of African American Music, a website that traces the history of genres such as swing and bebop, is the result of decades of research by ethnomusicologist Portia K. Maultsby. She was not alone in her ________ Maureen Mahon and Fernando Orejuela, among other scholars, also contributed to the project.
Which choice completes the text so that it conforms to the conventions of Standard English?
efforts, however,
A
efforts, however;
B
efforts however
C
efforts; however,
D