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The enolic form is favored in molecules with two carbonyl groups separated by a –CH2 group due to: (i) Enhanced stability from conjugation, and (ii) Stabilization through an intramolecular hydrogen bond between the hydroxyl group of the enol and the second carbonyl group. Therefore, the correct order is III > II > I.

1. Stabilization due to conjugation effects.
2. Intramolecular hydrogen bonding between the enolic hydroxyl group and the second carbonyl group.
3. III > II > I.
4. None of these.

Correct answer: III > II > I.

Solution

The question explicitly states that the correct answer is 'III > II > I,' which matches option C. This order is due to the combined effects of conjugation and intramolecular hydrogen bonding stabilizing the enolic form.

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