For micelle formation, which of the following statements are correct?
(A) Micelle formation is an exothermic process.
(B) Micelle formation is an endothermic process.
(C) The entropy change is positive.
(D) The entropy change is negative.

We need to determine which statements about micelle formation are correct.

Micelle formation occurs when surfactant molecules aggregate in solution above the critical micelle concentration (CMC). This process involves the hydrophobic tails coming together, releasing ordered water molecules from around the hydrophobic parts.

Since micelle formation involves breaking the structured water cage around the hydrophobic tails, it is generally an endothermic process ($$\Delta H > 0$$). Energy is required to break the structured water cage (iceberg structure) around the hydrophobic tails, so statement (B) is correct and (A) is incorrect.

Upon micelle formation, the ordered water molecules surrounding the hydrophobic parts of the surfactant are released into the bulk water. This release leads to a large positive entropy change ($$\Delta S > 0$$), so statement (C) is correct and (D) is incorrect.

Micelle formation is spontaneous ($$\Delta G < 0$$) because the large positive $$T\Delta S$$ term overcomes the positive $$\Delta H$$:

$$\Delta G = \Delta H - T\Delta S < 0$$

This confirms that the process is entropy-driven.

Therefore, statements B and C are correct.

Hence, the correct choice is Option C.