Step 1: Understanding the Concept:
The question asks to identify which of the given ragas use 'Chatushruti Rishabham' (R2), a specific variety of the Rishabha swara in Carnatic music.
Step 2: Detailed Explanation:
Let's examine the scale of each raga:
- (A) Mohanam: Its scale is S R2 G3 P D2 S'. It uses Chatushruti Rishabham (R2).
- (B) Hindolam: Its scale is S G2 M1 D1 N2 S'. This raga does not use Rishabham at all; it is a 'varjit' (omitted) swara.
- (C) Kalyani: Its scale is S R2 G3 M2 P D2 N3 S'. It uses Chatushruti Rishabham (R2).
- (D) Sreeranjani: Its scale is S R2 G2 M1 D2 S' / S N2 D2 M1 G2 R2 S'. It uses Chatushruti Rishabham (R2).
Therefore, the ragas that use Chatushruti Rishabham are Mohanam, Kalyani, and Sreeranjani.
Step 3: Final Answer:
The correct combination is (A), (C), and (D).