A large school district is considering changing the start time of their elementary and high schools. The superintendent wants to poll parents to get their feedback on the proposed change. Some parents in the district have their email address on file with the district, so the superintendent emails a survey to a random sample of addresses. After a week, they send a reminder email to those addresses that encourages parents to fill out the survey if they haven't already. Which of the following is not a potential source of bias in their survey? Choose 1 answer:

A

Parents with strong opinions are more likely to respond.

(Choice B)

B

Parents without email access may have different opinions than parents with email access.

(Choice C)

C

Some parents may be too busy to respond based on their work schedules, and they might have a different opinion on the start time changing.

(Choice D)

D

The random sample might include a disproportionate number of addresses from either high school or elementary parents.

(Choice E)

E

Some parents may ignore the initial request and only respond after they receive the reminder.

The option that isn't a potential source of bias in their survey is E. Some parents may ignore the initial request and only respond after they receive the reminder.

Sampling bias simply means when the members of a population are more likely to be selected in a sample than others. In such a case, some individuals are favored at the expense of others.

Based on the information given, parents may ignore the initial request and only respond after they receive the reminder. This is not a bias since they'll eventually respond. This doesn't affect the sampling.

In conclusion, the correct option is E as it does not bring about bias.

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