Climate scientists have identified one major driver of recent temperature increases ______ the rising concentration of greenhouse gases in the atmosphere.
Which choice completes the text so that it conforms to the conventions of Standard English?
- Acheck_circle
:
- B
;
- C
(empty)
- D
, which is
Explanation
A colon best introduces the noun-phrase elaboration of "one major driver." A semicolon requires an independent clause; ", which is" works but is wordier; " " creates a run-on.