Step 1: Use the matra count first.
Roopak has 7 matras, so the three parts must add up to 7.
Step 2: Test the sums.
Option 1 gives 7, option 2 gives 8, option 3 gives 8, option 4 gives 7. So options 2 and 3 are out.
Step 3: Use the order.
Between options 1 and 4, we need the right order. Roopak starts with a khali of 3 matras (Ti Ti Na) followed by 2 + 2.
Step 4: Write the bols.
The theka is Ti Ti Na | Dhi Na | Dhi Na. The groups are 3, 2 and 2.
Step 5: Conclude.
So option 4 is correct.
Final Answer:
Roopak has 7 matras divided 3 + 2 + 2.
\[ \boxed{3 + 2 + 2 = 7} \]