A student dissolves a substance in water, tests the resulting solution, and observes that red litmus paper turns blue. based on this result, the solution is

The solution is a base

Explanation:

A basic solution changes red litmus paper to blue. This is one unique property of a base that differentiate them from All other compound

Basic

Explanation:

A basic solution turns red litmus blue. When a moist red piece of litmus paper is dipped into a basic solution, the red litmus paper turns blue.

The change in the colour of litmus paper is a quick test of the acidity or alkalinity of a solution. Acids turn blue litmus paper red and basic solutions turn red litmus paper blue.