Science task 145: A New Zealand Level 1 learner applies foundational knowledge to a familiar community context. What is [H⁺] when pH=7?

A. 1 × 10^7 mol L⁻¹ B. 1 × 10⁻7 mol L⁻¹ C. 1 × 10⁻8 mol L⁻¹ D. 7 mol L⁻¹