Which survey method offers the least geographic flexibility?

Explanation:

Mail Survey Method: The mail survey method is one of the traditional survey methods where questionnaires are sent by mail to respondents. This method requires respondents to complete the survey and send it back via mail.

Geographic Flexibility: The mail survey method has the least geographic flexibility compared to other survey methods. It is limited to the geographical regions where mail can be received and sent. This limitation restricts the reach of the survey to a specific area or population.

Challenges: One of the main challenges with mail surveys is the low response rate they often receive. Due to the delay in mailing, some respondents may not complete the survey or may not send it back in time. Incomplete mailing lists can also impact the effectiveness of this method.

Overall, the mail survey method offers the least geographic flexibility among the survey methods mentioned, making it less suitable for reaching a diverse and widespread population.