Do not send me links or pdfs pls

Determine whether each sample is unbiased with complete sentences.

The population is every female living in the United State s.

A. Sample: Every female who responds to a survey sent out in the mail is included.


B. Sample: Every female is listed alphabetically and every 1,000th female is included.

C. Sample: Every female is put into a group based on age. Ten females from every age group are randomly chosen.