Penguins cannot fly through the air ______ they are remarkably skilled swimmers, propelling themselves with their flippers.
Which choice completes the text so that it conforms to the conventions of Standard English?
- Acheck_circle
; however,
- B
, but,
- C
,
- D
(empty)
Explanation
"However" between independent clauses requires semicolon and comma. ", " is a splice; " " is a run-on; ", but," is over-punctuated.