Science task 195: A New Zealand Level 1 learner applies foundational knowledge to a familiar community context. What is [H⁺] when pH=6?

A. 1 × 10^6 mol L⁻¹ B. 6 mol L⁻¹ C. 1 × 10⁻7 mol L⁻¹ D. 1 × 10⁻6 mol L⁻¹