Answer:
C. There is sufficient evidence to support the claim that the true proportion is less than 3 in ten thousand.
Step-by-step explanation:
The claim of the researcher is that fewer than 3 in ten thousand male fireflies are unable to produce light due to a genetic mutation.
Then, the conclusion of the hypothesis test is to reject the null hypothesis. The null hypothesis stated the opposite of the researchers claim: that 3 or more in ten thousand male fireflies are unable to produce light due to a genetic mutation.
This means that the the researcher now has statistical evidence to support his claim.