Which scenario best exemplifies using the Internet as a research tool?

The scenario in which an investigator posts a survey link on their Facebook wall best exemplifies using the Internet as a research tool because it actively engages a wide audience through a social media platform, facilitating data collection directly from participants. This approach leverages the connectivity and reach of the Internet to gather responses quickly and efficiently, taking advantage of the vast number of users on social media.

Utilizing platforms like Facebook not only expands the potential participant pool but also allows for real-time interaction and feedback, which can enhance the research process by making it easier to distribute surveys and collect data from diverse demographics. This method is particularly relevant in modern research practices, where digital engagement is vital for effective data gathering.

The other scenarios do involve research tools and data collection but do not exemplify the broad engagement that is characteristic of using the Internet as a survey tool. Analyzing data from online articles is more about secondary research and literature review rather than primary data collection. Measuring website traffic pertains to analytics rather than active participation and data contribution from individuals. Conducting interviews over video calls, while also utilizing Internet technology, does not embody the same level of mass engagement through online platforms as a survey posted on social media does.