Explanation:

Correct option 1) 5 Boxes

Given:

1. 10 boxes in total, arranged vertically (1 at bottom, 10 at top).

2. C is at the top → So C is at position 10.

3. W is at 7th position.

4. J and K are immediately above and below W → So K = 6, W = 7, J = 8

5. There are 2 boxes between O and K

6. There are 4 boxes between B and E

7. E is at an odd-numbered position

8. N is exactly between D and E

9. One box is L (used somewhere)

As per given information final arrangement of boxes comes out to be -

Position                      Box

1.                                C

2.                                 E

3.                                 J

4.                                 W

5.                                  K

6.                                  N

7.                                  B

8.                                  O

9.                                   L

10.                                 D

D is at 10th place  whie W is at 5th Place.
Hence Boxes between D and W are 5.