Answer: Option (d) is the correct answer.
Step-by-step explanation:
According to collision theory, the particles should colloid frequently and they should be placed in proper orientation.
Whereas sometimes even at low temperature, reactant particles have enough energy. As a result, they tend to colloid or react with each other. Hence, it leads to a chemical reaction which might be dangerous.
Therefore, it is suitable to keep the reactant particles in separate containers so that a chemical reaction cannot take place.
So, we can conclude that the statement keep the reactants in separate containers best applies collision theory to preventing a dangerous reaction from occurring.