Where the comma should go in the sentence
Answer:
The answer here is B, re/co.
Explanation:
The theatre was <u>re</u>built a year ago. I'm the <u>co</u>-author of the design. These are the only two prefixes that match the words/sentence.
A which is a direct object
The abbreviation after a word in the dictionary tells you what kind/ part of speech the defined word is.
Hope this helps! :)