Step 1 — Recall the key facts from the passage:
- Total students = 20, all facing north.
- Rina = 6th from the left end → Position 6.
- Shweta has 3 students between her and Rina → Shweta can be at Position 2 or Position 10.
- Radha stands exactly between Rina and Shweta.
- Tina is 6th to the right of Radha.
- Anita = 4th from the right end → Position 17.
- Condition: More than 4 students between Rina and Tina (important for elimination).
Step 2 — Work out Shweta and Radha’s positions:
Case 1: Shweta at Position 2 → Then Radha would be midway between Position 6 and Position 2, i.e., Position 4.
→ If Radha = 4, then Tina = Radha + 6 = Position 10.
→ But the distance between Rina (6) and Tina (10) = 3 students in between, which is not more than 4. So this case is invalid.
Case 2: Shweta at Position 10 → Then Radha is midway between Position 6 and Position 10, i.e., Position 8.
→ If Radha = 8, then Tina = Radha + 6 = Position 14.
→ Distance between Rina (6) and Tina (14) = 7 students in between, which satisfies the “more than 4” condition.
→ So this case is valid.
Step 3 — Fix all confirmed positions:
- Rina = 6.
- Shweta = 10.
- Radha = 8.
- Tina = 14.
- Anita = 17.
Step 4 — Find the number of people between Anita and Tina:
Anita = Position 17, Tina = Position 14.
→ Students between them = Positions 15 and 16.
→ Count = 2.
Step 5 — Conclude:
There are exactly two people standing between Anita and Tina.
Answer: The correct option is (B) : two.