According to best practices, how should course content be designed for learners without formal training?

The choice that emphasizes simplifying complex ideas is correct because learners without formal training often have limited background knowledge and may struggle to understand advanced or intricate topics. When course content is designed to simplify these concepts, it makes the material more accessible and relatable, helping learners grasp fundamental principles without feeling overwhelmed.

Simplifying ideas involves breaking down complex information into manageable parts, using clear language, and providing relatable examples. This approach not only helps in building a solid foundation but also encourages engagement and confidence among learners who might feel intimidated by difficult subjects.

The other options focus on aspects that may not cater to the immediate needs of learners without formal training. For instance, challenging existing knowledge may confuse or discourage such learners, while including advanced technical concepts could lead to a lack of understanding and frustration. Similarly, addressing known skills and competencies might overlook the foundational knowledge that these learners need to develop first, making it difficult for them to successfully progress in the learning process.