An AI system is trained using data collected through a mobile app. Users agreed to terms of service but were not explicitly told their data would be used for AI model training. From a data ethics perspective, which principle is MOST directly implicated?

Here's the deal — b is correct because using data for AI training purposes not disclosed to users at the time of collection violates informed consent principles — individuals cannot meaningfully consent if they are not told about AI training as a use of their data. A, C, and D are other data protection principles not specifically implicated by the disclosure gap described.