Correct Answer:

Solution : In the given image series, three things are simultaneously happening.
1. Letters are consecutively increasing in the alphabetical order.
2. Letters are moving in the clockwise direction.
3. The number of curly brackets on the left side is decreasing by one and on the right side it is increasing by one.
Thus, the next image in the series would be –

So, the above image resembles the image represented by the fourth option. Hence, the fourth option is correct.