The question asks for the decreasing order of ease of alkaline hydrolysis of four esters labeled I, II, III, and IV.

However, in the provided prompt, the structures of esters I, II, III, and IV are missing. Without the actual ester structures, it is not possible to determine the hydrolysis order from chemical reasoning, because alkaline hydrolysis depends strongly on:

1. Nature of the alkyl/aryl group
2. Steric hindrance around the carbonyl carbon
3. Electronic effects such as $+I$, $-I$, resonance, and conjugation
4. Whether the ester is aryl ester, alkyl ester, vinyl ester, etc.

So a step-by-step chemical comparison cannot be carried out from the text alone.

What can be concluded from the given data?

The only available information beyond the incomplete question is the stored correct answer: C.

Option C corresponds to:

Thus, based solely on the provided record, the answer is:

Note

If you provide the image or the structures of esters I, II, III, and IV, I can give the full chemical reasoning and verify whether option C is indeed correct from first principles.