Question

Which of the following is true in a basic solution?

Answer 1

I believe that the best answer to the choices given in your question is C. The molarity of hydronium is lower than the molarity of hydroxide.

I hope I have answered your question. Have a nice day ahead. 

Answer 2

Answer: C. The molarity of hydronium is lower than the molarity of hydroxide.

Explanation: A basic solution is one which has pH above 7 and an acidic solution is one which has pH below 7.

A basic solution has more number of $OH^-$ ions as compared to $H^+$ ions and an acidic solution has lesser number of $OH^-$ ions as compared to $H^+$ ions .

A neutral solution has equal number of $OH^-$ ions as compared to $H^+$ ions.