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Which of the following is not considered a threat to internal validity in an experimental design?
Vehicles
Modes of transportation that move people or goods from one place to another, including cars, buses, bicycles, etc.
A professional networking platform that allows individuals and companies to connect, share content, and find job opportunities.
Social Networking Sites (SNS)
Websites or platforms that enable users to create and share content or to participate in social networking.
Social Storefronts
Online platforms or sections of websites where businesses can directly sell products or services through social media channels.
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