Which is an example of coagulation?

Statement $1$: Micelles are formed by surfactant molecules above the critical micelle concentration ($\mathrm{CMC}$) because

Statement $2$: The conductivity of a solution having surfactant molecules decreases sharply at the $\mathrm{CMC}$.

Among the following, the surfactant that will form micelles in the aqueous solution at the lowest molar concentration at ambient conditions is

(Hint: During the micelle formation, the number of ions decrease as a result of which conductance reduces. The formation of micelles, thus, also reduces the osmotic pressure, thereby increasing the average molar mass of the hydrocarbon chain of the surfactant.)