The discovery of a previously unknown species of deep-sea octopus near the hydrothermal vents ______ astonished marine biologists worldwide.
Which choice completes the text so that it conforms to the conventions of Standard English?
- A
,
- B
;
- C
:
- Dcheck_circle
(empty)
Explanation
Even though the subject ("The discovery...vents") is long, no comma should separate a subject from its verb ("astonished"). Only no punctuation is correct.