A very small effect size can turn out to be statistically significant because a. population standard deviations were too large b. deviation scores were used rather than raw scores c. the sample size...

A very small effect size can turn out to be statistically significant because

a. population standard deviations were too large

b. deviation scores were used rather than raw scores

c. the sample size was very large

d. the assumptions underlying the z test were too strict

Please explain why the answer is c: the sample size was very large