The Clemmensen reduction is represented by:

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(A) The Clemmensen reduction involves the reduction of carbonyl groups (aldehydes and ketones) to methylene groups $(-CH_2-)$ using zinc amalgam $(Zn-

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(A) The Clemmensen reduction involves the reduction of carbonyl groups (aldehydes and ketones) to methylene groups $(-CH_2-)$ using zinc amalgam $(Zn-Hg)$ and concentrated hydrochloric acid $(HCl)$.The reaction shown in the image is:$C_6H_5COCH_3 \xrightarrow{Zn-Hg/HCl} C_6H_5CH_2CH_3$This is the classic Clemmensen reduction.Option $B$ represents the Wolff-Kishner reduction.Option $C$ represents reduction using red phosphorus and $HI$.Therefore,only the reaction shown in the image is a Clemmensen reduction.

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