I think the answer is 1.First, find the least common denominator, which is 6. Then, multiply the numerator and denominator by the same number to get 6 as the denominator. 

 is multiplied by 6 to get 

. 

 is multiplied by 3 to get 

. 

 is multiplied by 6 to get 

. Since 

 is closest to 

, 1 is the answer. Hope this helps!