Mostly in my opinion I think it’s the secound one
Answer: an invisible line around which an object rotates, or spins.
Explanation: //Give thanks(and or Brainliest) if helpful (≧▽≦)//
Both acids and bases produce a part of a water molecule. Bases dissociate hydroxide (–OH) ions and acids, hydrogen (H+) ions that when combined form water. Both are also very corrosive when they are strong enough that they fully dissociate in water.
C. It increases and the pH stays constant.
