The correct answer is b) heterogeneous and shows Tyndall effect
Let us see why so?
We know that S(Sulphur) and CS2(Carbon Disulphide) do not form a uniform composition so it forms a heterogeneous solution.
And in water CS2 settles down as the bottom layer and sulfur remains suspended in the solution forming a colloidal solution thus being able to show tyndall effect.
Therefore, a mixture of sulphur and carbon disulphide is heterogeneous in nature and shows the Tyndall effect.
More on Tyndall Effect here