In which solution would methyl orange appear yellow?

Methyl orange is a pH indicator that exhibits different colors depending on the pH of the solution. In acidic solutions (with a pH below 3.1), methyl orange appears red. As the pH increases, moving towards neutral and alkaline conditions, it transitions through orange and finally becomes yellow in more basic environments.

In a solution that is alkaline (basic), with a pH above 4.4, methyl orange will display a yellow color. This characteristic makes methyl orange particularly useful in titrations involving strong acids and weak bases, as the color change indicates the point at which the solution shifts from acidic to basic.

Understanding this behavior of methyl orange clarifies why the correct answer indicates it appears yellow specifically in alkaline solutions.