Step 1: Plan:
I will count the bols in one cycle of the Keharwa theka and then match the count with the options.
Step 2: Write the theka:
Dha Ge Na Ti Na Ke Dhi Na. Each bol takes one matra.
Step 3: Count:
Counting the bols one by one gives Dha(1) Ge(2) Na(3) Ti(4) Na(5) Ke(6) Dhi(7) Na(8). The total is 8.
Step 4: Compare with common taals:
6 is Dadra, 7 is Rupak, and 9 is not a standard Keharwa count. Only 8 is left.
Step 5: Conclusion:
Keharwa is an 8 matra taal with a 4 + 4 division, which is option 4.
Final Answer:
Keharwa has 8 matras, which is option 4.
\[ \boxed{4} \]