Answer :

The closest number to 5/6 would have to be 1

1) 0 wouldn't be the answer because the fraction would have to look like 0/6, 1/6, or 2/6

2) 1/2 wouldn't be the answer because half of 6 is 3 ---> 3/6

3) 1 would be the answer because 5/6 is close to 6/6, which is one whole.

1, because 0, is 0/6, 1/2 also equals 3/6, and 1 equals 6/6. Of all these numbers, 5/6 is closest to 6/6 which equals one.
If this is confusing for you, take out the denominators: think logically. Is 5 closer to 0, 3, or 6? 
6. 
Therefore, when you plug back in the denominators, the answer is 6/6 or 1.