Answer:
A. it conducts electricity
Step-by-step explanation:
A. Since Nitric Acid is a strong acid, which means it is a strong oxidizing agent, this makes Nitric Acid a good conductor of electricity.
B. Basic solutions are only going to form OH⁻ ions. A Nitric Acid solution will form H⁺ ions.
C. Alkaline substances (pH greater than 7) are more likely to turn blue, so HNO₃ would turn that blue into a red color.
D. I don't know much about phenolphthalein , all I know is that is is pink in Alkaline solutions (basic) and colorless in acidic solutions.
I hope this helps, good luck!