As the pH value becomes higher, what happens to the basicity of a solution?

Correct answer: It increases

On the usual pH scale, values below seven indicate acidity, seven is approximately neutral, and values above seven indicate basicity. As pH rises above the neutral point, hydrogen-ion concentration decreases relative to hydroxide-ion concentration, so basicity increases. Therefore option A is correct. Options B and C reverse the trend, while D applies only to a solution that remains near pH seven.