Step 1: Understanding the Concept:
Place Monika in the middle (Position 3). Use the adjacency rules to place the others.
Step 2: Detailed Explanation:
1. \_ , \_ , Monika, \_ , \_
2. Rashi is adjacent to Monika (Pos 2 or 4). Let's put Rashi at Pos 2.
3. Rashi is NOT adjacent to Surekha or Abha. So Pos 1 cannot be Surekha or Abha.
4. The only one left for Pos 1 is Anuradha.
Step 3: Calculation:
Row: Anuradha, Rashi, Monika, \_ , \_
Remaining: Surekha and Abha (Positions 4 and 5).
Condition check: Anuradha is not adjacent to Surekha. If Surekha is at Pos 4, she is adjacent to Monika, not Anuradha. This works.
Step 4: Final Answer:
Anuradha is sitting next to Rashi. Thus, the correct option is (a).