Answer :

To identify a counterexample of the given conditional statement "If a number is divisible by three, then it is odd," we need to find a number that is divisible by three but is not odd (i.e., the number should be even).

Let's consider the options:

- 01: This number is not divisible by three.
- 03: This number is divisible by three but it is odd.
- 06: This number is divisible by three and it is even.
- 09: This number is divisible by three but it is odd.

Among these options, the number 06 is divisible by three and is not odd (it is even), which makes it the counterexample we are looking for.

Therefore, the counterexample of the given conditional is 06.