Final answer:
An accurate answer to the question cannot be provided without clarification on the expression being asked about due to an apparent typo in the question.
Step-by-step explanation:
The question seems to contain a typo, but it appears to ask which expression is equivalent to a certain numerical expression, possibly involving the number 6 and the number 9. Since there isn't a clear mathematical expression given, it is not possible to provide an equivalent expression. However, if the question intended to ask for the sum of 6 and 9, the equivalent would be 15. If the expression was intended as 6 to the power of 9, we would need to calculate 69, which is a large number not represented among the options given. An accurate answer cannot be provided without clarification of the original expression.