The question is asking you how to find the absolute value of -7/9. Absolute value is the value of the number, regardless if it is negative or positive. So, that makes C your answer.
I hope this was helpful in finding an answer to your question, have a great day! :)
You need to find the answer that would be the "opposite" of the one between the lines, so you would mainly look at the sign. Since the problem between the lines is negative you would just change it to a positive. -7/9 simplified would be C. 7/9.
