NVR 11A - Can someone please explain

[JaysDarlin]

Lol, in my moment of gratitude, I didnt mean to send anyone off to the next life! I meant parents who have been through the 11+ previously! LOL.

[Rivermonster]

If the rule for this question is that you just need to keep the common elements I find this rather flimsy. I'm sure there are other simplistic rules that you could make up and they would be satisfied with one of the other answers. For example, the rule could be that in each column the number of objects in the top and bottom rows is one less than the number in the middle row. This would mean the empty box has just one object and the answer would then be e, not c.

Adrian