There are no choices, but anything that has those option are right.
9/10=27/30
5/6=25/30
I hope this helps :-)
Answer:
Try the gauth math app it's very useful to use
D because it has to be a chord due to being perpendicular to a diameter
Out of those 2 answers I believe your answer would be B only because 81% of Americans in the us have a phone and 35% of people in the us check there phone more than 50 times per day