The Galapagos Islands harbor an extraordinary array of unique species ______ each island has its own distinct populations adapted to local conditions.
Which choice completes the text so that it conforms to the conventions of Standard English?
- A
:
- B
(empty)
- Ccheck_circle
;
- D
, which
Explanation
Both clauses are independent and equally weighted; a semicolon joins them cleanly. A colon would imply explanation, which is partially apt but the semicolon better preserves equal weight; " " is a run-on; ", which" creates an unclear modifier.