Answer:
I BELIEVE ITS a
Explanation:
THE OTHERS DONT MAKE SENSE
If you have the subordinate clause before the main clause, you write a comma. However, the rules are a bit different for relative pronouns connecting main and subordinate clause.
<em>C. preview contains the prefix pre-; it changes the word to mean"to see in advance.'' This is the correct answer I promise I just took the K12 unit test and I thought it was A but It wasn't right so yeah the right once again would be C.</em>