Question 14

Aurora Borealis → emission from excited O and N atoms (5); partially polarized sunlight → scattering by atmospheric molecules (4); rainbow → dispersion and reflection (1); dark and bright fringes → diffraction (3).

**Finalizing JSON output** I need to focus on matching A clearly. It seems that having the final JSON will suffice, with specific details like Aurora 5, polarized sunlight 4, and rainbow1 fringes 3. There’s no need to provide additional rationale for the user; just a straightforward JSON shape will do. I’ll wrap it up by outputting the object in that formatted way for clarity.

**Finalizing output logic** I’m thinking about dark and bright fringes and their relationship with interference and diffraction. There's a distinction between them, and it seems that only diffraction is mentioned in List-II. Based on this, I conclude that option A is the correct choice. I need to ensure I’m providing the final JSON output precisely. I’ll be careful to include only necessary details since the key concept revolves around the fundamental phenomena of light.

Matching each up: Aurora comes from atomic emission, polarized sunlight from molecular scattering, rainbows from dispersion and reflection, and fringes from diffraction — giving P→5, Q→4, R→1, S→3, which is option A.