answer: b
explanation: since there are two whole rectangles, (12/12 for one rectangle) it would be 24/24. then, there are 9 mini squares on the third rectangle, so 9/12 would be the fraction for the third rectangle. but thats not all. we can simplify 24/24 to 2, then 9/12 to 3/4. add the two and 3/4 and you should get answer choice b.