As we can see in the given problem figures that the individual designs with the line are getting changed according to different patterns.

The line with the arrow is rotating in the anticlockwise direction as 90 degrees, 180 degrees, 90 degrees, 180 degrees and so on.

The line with "u" is rotating in the clockwise direction as 45 degrees, 90 degrees, 135 degrees, 180 degrees and so on.

The line with a square is rotating in the anticlockwise direction as 0 degrees, 45 degrees, 90 degrees, 135 degrees, 180 degrees and so on.

Hence, according to the patterns described above answer will be D