Answer:
II. tastes sour III. conduct electricity
Step-by-step explanation:
Let us go through all three statements.
Statement I says that acid doesn't react with a metal.
This is false because acids react with metals to form salt and hydrogen.
Statement II says that acids taste sour.
This statement is true. If you taste a lemon you realize that it's sour. This is due to the presence of citric acid in the lemon.
Statement III says that acids conduct electricity.
This statement is also true. If you mix an acid in the water, it dissociates many Hydrogen ions which act as charge carriers and help conduct electricity.