Comprehensive and Detailed Explanation:
The ICF Core Competency 4, "Cultivates Trust and Safety," emphasizes adapting to the client's needs to create a supportive environment (ICF Core Competencies, 4.1). Additionally, Competency 6, "Listens Actively," requires coaches to be attuned to the client's way of processing information (6.2). Option D aligns with these principles by demonstrating curiosity and partnership. Asking the client about their preferred learning style respects their autonomy and ensures the coach does not assume what works best, which is a key aspect of the ICF Code of Ethics, Section 4, "Responsibility to Practice and Performance" (4.1 - Adapting to client needs).
Option A violates the ethical principle of non-discrimination and fails to adapt to the client's needs, potentially undermining trust. Option B assumes the whiteboard is the solution without client input, which does not fully partner with the client (Competency 2.2 - Partnership). Option C dismisses the client's visual learning style, contradicting Competency 7, "Evokes Awareness," which encourages leveraging the client's strengths (7.1). Thus, D is the best response as it fosters collaboration and tailors the approach to the client's preferences.