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Answer: D

Key insight
A horizontal flip followed by a vertical flip is equivalent to a 180° rotation. The circle positions and their revolution direction will be rotated 180° from the original.

Step by step
Step 1: Original image — large light-blue circle with a dark blue dot at top and orange dot below it, grey dot at bottom.
Step 2: Horizontal flip — left-right mirror: the dot positions swap left-right (but since the dots are vertically arranged centrally, their vertical positions stay, only left-right asymmetry changes).
Step 3: Vertical flip of the horizontally-flipped result — up-down mirror: the dark blue dot (originally top) moves to the bottom, the grey dot (originally bottom) moves to the top.
Step 4: Net result = 180° rotation: dark blue at bottom, orange in middle, grey at top. Option D matches this.
Therefore the answer is D.

Why wrong options are wrong
Option A: Shows only a horizontal flip without the vertical flip.
Option B: Shows only a vertical flip without the horizontal flip.
Option C: Shows the original orientation or a 90° rotation.

Remembe

An animation of revolving circles is shown on the left. If it is flipped horizontally and then flipped vertically, what will be the resulting animation?