The balanced equation for the reaction is
, and the type of reaction is a double displacement reaction. Here option D is correct.
Let's balance the chemical equation first:

Balanced equation:

Now, let's determine the type of reaction:
This is a double displacement reaction, also known as a metathesis or precipitation reaction. In a double displacement reaction, the cations and anions of two different compounds switch places, leading to the formation of two new compounds.
In this specific reaction, calcium sulfate
and aluminum iodide
react to form aluminum sulfate
and calcium iodide
. Here option D is correct.