Answer:
It is an example of single displacement reaction.
Explanation:
Single replacement reaction:
A single element replaces another element in a compound.
For example,
[tex]AB+C\rightarrow A+BC[/tex]
The given reaction is as follows.
[tex]AlBr_{3}+3K\rightarrow 3KBr+Al[/tex]
In the above reaction, aluminium bromide is dissociated into the [tex]Al^{3+}and Br^{-}[/tex] , these bromide ions are reacted with potassium atoms to form potassium bromide.
Here, only one element displaces therefore, it is an single displacement reaction.