The chemistry teacher demonstrated one fundamental concept above all others ______ matter cannot be created or destroyed, only transformed.
Which choice completes the text so that it conforms to the conventions of Standard English?
- A
;
- B
, which is
- Ccheck_circle
:
- D
, that
Explanation
A colon introduces an elaboration of "one fundamental concept." A semicolon could also work but a colon better signals direct explanation; ", that" creates a fragment; ", which is" is wordier.