The correct option is
C
Detailed step-by-step solution:
This is a growing pattern, as the number of boxes are increasing with each group as we move from left to right.
In the first group, there are 2 boxes, the second group has 4 boxes, the third has 6 boxes, and the fourth has 8 boxes.
So, we can see that the boxes are increasing by two in every group.
Therefore, the fifth group will have 2 more boxes than the fourth group.
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1607524/original_4_c.JPG)
Therefore, the missing group will have 10 boxes.
Hence, Option C is correct.