Answer
The solubility is :
a) insoluble
b) insoluble
c) soluble
d) soluble
Work Step by Step
a) Molecules containing $S^{2-}$ are usually insoluble.
b) Molecules containing $PO_4^{3-}$ are usually insoluble.
c) Molecules containing $CO_3^{2-}$ are usually insoluble but $Li_2CO_3$ is an exception.
d) Molecules containing $Cl^-$ are usually soluble.
