Increasing the heat of the air under the fabric of a hot air balloon causes the volume of the air to increase and the density of the air to decrease, which brings the balloon higher into the air. This follow . A. Boyle's Law

B. Charles' Law

C. Pascal's Principle

D. Bernoulli's Principle

C
That’s the real answer

The activity series is shown in the attached picture. if the element is below the other, then you can displace the other. following the activity series as a guide, the reactions are as follows: nickel and aluminum chloride3 ni + 2 alcl₃  → 3 nicl₂ + 2 albarium and copper bromideba + cubr  →  no reaction because cu is less oxidizable than bapotassium nitrate and aluminum3 kno₃ + al  → al(no₃)₃ + 3 ksodium phosphate and zincnaso₄ + zn  → znso₄ + na