[T33]

I understand that Lithium aluminum hydride is a powerful reducing agent. So the carboxyl group would be reduced to OH, but answer B is incorrect. Would the H3O+ cause the Ester to reduce to OH? Answer choice E?

[wildfyr]

Why don't you look in your textbook how LAH reacts with esters? Or a quick google. I think the answer will pop out once you do.

[Babcock_Hall]

As a general practice when dealing in redox chemistry, I sometimes find it helpful to assign oxidation numbers to carbon atoms.

[93R]

Once 1st reduction is done to get ketone to 2ndary alcohol, the ester C=O is reduced to an OH.

This is B, but this is a lactol, in equilibrium with the open chain aldehyde, which can further be reduced to tetra-ol (if that's even the correct term haha). I'd guess E too.

[Babcock_Hall]

93R,

As a general practice, we try to lead the OP to the right answer, but for a dormant thread, it probably does not matter.