Answer:
5/6
Step-by-step explanation:
If we simplify 2/4 to 1/2, now we can easily see that any fraction (with a denominator of 6) above 3/6 (also 1/2) is a correct answer.
In this case we only have two simplified fractions above 3/6 which are 4/6 (2/3), and 5/6.
We can choose 5/6 because it's the only fraction that is simplified and still has a denominator of 6. (Plus, it's greater than 2/4).
Hope this helps!!
