Question

An unknown solution has a pH of 7. How would you classify this solution? acidic basic neutral There is not enough information to answer the question.

Answer 1

It would be a neutral,

The acidity of water is 7 as well

Answer 2

There's exactly enough information to answer the question! xD
pH stands for power of Hydrogen. It represents the proportion of Hydrogen ions in your body. the values of the pH ranges from 1 to 14.
When the pH = 7, the solution is considered as neutral. When the pH > 7, the solution is considered as Basic. And when the pH < 7, the solution is considered as Acidic.
By hypothesis, we know nothing about the solution except of its pH which is 7. Which means that this is a neutral solution.

Hope this Helps! :)