It has to be dilute since the crystal dissolved and unsaturated for the same reason so B
It is a homogenous solution because the powder is suspended in the liquid and there is no difference between any parts of it.
It’s 1 or 3 sorry if this is wrong
Explanation:
Your chemical equation should look like this:
Li3PO4 + AlF3 --> 3LiF + AlPO4
This is the balanced equation for a double-displacement reaction