Step 1: Identify the pattern in the sequence of figures.
- The first figure consists of a curved shape with a small dot.
- In the second figure, the shape becomes more twisted and structured while maintaining the dot.
- The third figure returns to a curved shape with additional internal modifications.
Observing the pattern, it appears that the curved shape alternates between different orientations, and small triangular modifications appear at different positions.
Step 2: Predict the next transformation.
- The alternation suggests that the next figure should return to the structured, twisted shape with additional modifications.
- Checking the answer options, Option S maintains the correct orientation with additional internal modifications that match the observed pattern.
Thus, the correct answer is option D.