City B. Higher altitudes have lower boiling points due to lower atmospheric pressure at higher altitudes
Answer:
I say the second one, im not rlly sure tho
Explanation:
As you go down a group on the periodic table, atomic radii tend to increase because elements with larger atomic numbers have more occupied electron levels which take up more space surrounding the nucleus.
I hope this helps.
Anything less that 7, would be a base.