Final answer:
The chance that Aanika's test will incorrectly reject the null hypothesis is 10%.
Step-by-step explanation:
The chance that Aanika's test will incorrectly reject the null hypothesis is referred to as the error probability or the Type I error rate. In this case, her p-value cutoff is 10%, which means that if the p-value is less than 10%, she will reject the null hypothesis. Therefore, the chance of incorrectly rejecting the null hypothesis is 10% or C.) 10%.