Answer: C
Explanation:
Vapour drift can take place when the substance or liquid evaporates. Volitile substance will evaporate more rapidly than non - volatile substance
Increase in temperature on substance make it lighter and float rapidly. Also, substance of high humidity will have more weight or density than the substance of low humidity.
The combinations that has the greatest impact in increasing the potential for vapor drift is
High temperature, low humidity which is option C
