The fossil was incredibly well preserved ______ it provided new insights into the diet of dinosaurs from the Jurassic period.
Which choice completes the text so that it conforms to the conventions of Standard English?
- A
; or
- B
and
- C
, but
- Dcheck_circle
, and
Explanation
Comma plus "and" connects two related independent clauses additively. " and" is a run-on; ", but" implies wrong contrast; "; or" misuses semicolon and conjunction.