Answer:
The Key difference between average vs weighted average is that simple average is nothing but simply adding up all the observation values and dividing the same by the total number of observations to calculate the average whereas weighted average is an average where each observation value will have a frequency assigned.
Explanation:
The answer is a, because the population number has increased.
C. HNO₃(aq) + KOH(aq) → KNO₃(aq) + H₂O
