To determine which compound can be reduced with zinc and hydrochloric acid to give the corresponding hydrocarbon, we need to understand the process of reduction and the properties of the given compounds.

Reduction with Zinc and Hydrochloric Acid:
The reduction of a compound with zinc and hydrochloric acid involves the transfer of hydrogen atoms from the reducing agents (zinc and hydrochloric acid) to the compound, resulting in the formation of a hydrocarbon.

Given Compounds:
a) Acetamide
b) Acetic acid
c) Ethyl acetate
d) Butan-2-one

To identify the compound that can be reduced, we need to consider the presence of functional groups and the reactivity of these functional groups towards reduction.

Acetamide:
Acetamide contains an amide functional group (RCONH2). Amides are not easily reduced by zinc and hydrochloric acid. They require stronger reducing agents or harsher conditions. Therefore, acetamide is not likely to be reduced to a hydrocarbon by zinc and hydrochloric acid.

Acetic Acid:
Acetic acid contains a carboxylic acid functional group (RCOOH). Carboxylic acids can be reduced to aldehydes or alcohols, but they are not directly converted to hydrocarbons by zinc and hydrochloric acid. Therefore, acetic acid is not likely to be reduced to a hydrocarbon in this reaction.

Ethyl Acetate:
Ethyl acetate contains an ester functional group (RCOOR'). Esters can be reduced to alcohols, but they are not directly converted to hydrocarbons by zinc and hydrochloric acid. Therefore, ethyl acetate is not likely to be reduced to a hydrocarbon in this reaction.

Butan-2-one:
Butan-2-one contains a ketone functional group (RCOCH3). Ketones can be reduced to secondary alcohols or further reduced to hydrocarbons by zinc and hydrochloric acid. Therefore, butan-2-one can be reduced with zinc and hydrochloric acid to give the corresponding hydrocarbon.

Therefore, the correct answer is option D) Butan-2-one.