Which controversy involved banning a Bluetooth-enabled children's toy due to data transmissions stored by the manufacturer?

• A. Data broking
• B. Big Data
• C. Dark phones
• D. My Friend Cayla Doll Controversy

Answer: (D)

This question centers on privacy risks when connected devices collect and transmit data, especially involving children. A Bluetooth-enabled toy that talks or responds via a companion app can send conversations and other data to the manufacturer’s servers. If those transmissions are stored or mishandled, it raises serious privacy and security concerns about who has access to the data, how long it’s kept, and how it’s used. The My Friend Cayla doll became a prominent case exactly around these issues: the doll’s Bluetooth connection and app transmitted data to the manufacturer, and concerns were raised that conversations could be stored and accessed, leading to bans or regulatory scrutiny in some places. This makes it the best fit for describing a controversy about data transmissions stored by the manufacturer.

The other options refer to broader data topics or different contexts (data brokers, Big Data, or terms related to devices not tied to a specific toy incident), so they don’t describe this particular controversy.