Step 1: R is on the extreme left (position 1), and K sits next to R, so K is in position 2. Step 2: The remaining three children, S, P and T, must occupy positions 3, 4 and 5. Step 3: S sits next to P, S does not sit next to T, and T does not sit next to K. Testing the possible orders for positions 3-4-5 shows only one arrangement satisfies all three conditions: position 3 = S, position 4 = P, position 5 = T, giving the full row R-K-S-P-T. Step 4: In this row, S (position 3) has neighbours K (position 2) and P (position 4). So the children sitting adjacent to S are K and P.