The question is asking us to match each phenomenon listed in List-I with its corresponding reason given in List-II.

Option 1: 4 3 1

- According to this option, reverberation (phenomenon A) would be matched with the reason of a ray of light entering a second medium (reason 4). This is incorrect because reverberation is actually the prolonged echo of sound waves, not light waves.

- Resonance (phenomenon B) would be matched with the reason of refraction (reason 3). This is also incorrect since resonance occurs when two waves of equal frequency superpose, not when two waves have slightly different frequencies.

- Refraction (phenomenon C) would be matched with the reason of two waves of equal frequency superposing (reason 1). This is incorrect because refraction is the bending of waves as they pass from one medium to another, not the superposition of waves.

Option 2: 4 3 2

- This option also matches reverberation with the reason of a ray of light entering a second medium, which is incorrect.

- However, it correctly matches resonance with the reason of two waves having slightly different frequencies superposing.

- Refraction is again matched with