Seven boxes, A, B, C, D, E, F and G, are kept one over the other but not necessarily in the same order. No box is kept above F. Only three boxes are kept between F and B. Only one box is kept between G and D. D is kept immediately above B. Only four boxes are kept between G and C. A is kept in some place above E. How many boxes are kept below D?

Given: Seven boxes, A, B, C, D, E, F and G, are kept one over the other but not necessarily in the same order.

1) No box is kept above F.

This means F is the topmost box (Position 7).

2) Only three boxes are kept between F and B.

3) D is kept immediately above B.

4) Only one box is kept between G and D.

Let's consider two cases:

Case 1: G is at 2

Case 2: G is at 6

5) Only four boxes are kept between G and C.

Consider Case 1 (G is at 2): If G is at 2, and there are 4 boxes between G and C, then C must be at 7 However, F is already at 7. So, Case 1 is not possible.

Consider Case 2 (G is at 6): If G is at 6, and there are 4 boxes between G and C, then C must be at 1 (6 - 4 - 1 = 1).

6) A is kept in some place above E.

Thus, there are 3 boxes kept below D.

Hence, the correct answer is "Option 1".