The answer to this question is B, 1/2 ÷ 2, or 1/4.
The first box has one, or one whole. The second box has the whole split into halves, or one half. The third box has the half split in half a further time. That is 1/2 split in half, meaning that it is 1/2 divided by 2 or 1/4. This shows that the answer is B 1/2 ÷ 2, or 1/4.