1. Dyeing Process Analysis:
- Aru folded the cushion cover twice and then rolled it before dyeing.
- The dye reaches the exposed areas while the folded and rolled sections remain undyed, creating a striped pattern when the cushion cover is unfolded.
2. Pattern Formation:
- The folds create parallel layers, and the rolling ensures the dye forms alternating bands on the surface. When unrolled and unfolded, the pattern results in clean, parallel stripes, as shown in \(C\).
3. Options Analysis:
- Option A: Represents a random dye pattern, inconsistent with the structured folding and rolling process.
- Option B: Suggests a striped pattern, but the orientation and density do not match the described process.
- Option C: Correctly represents the parallel stripes resulting from folding and rolling, aligning with the process shown.
- Option D: Indicates a spiral pattern, which is not feasible given the described folding and rolling process.
Conclusion: The pattern Aru got after dyeing the cover is shown in \(C\).