The product of the reaction is:

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(A) The given reactant is a vicinal dibromide in a specific conformation. The elimination of $-Br_2$ (dehalogenation) using zinc dust or iodide ions t

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(A) The given reactant is a vicinal dibromide in a specific conformation. The elimination of $-Br_2$ (dehalogenation) using zinc dust or iodide ions typically proceeds via an anti-elimination mechanism.In the given Newman projection,the two bromine atoms are in an anti-periplanar orientation.Anti-elimination from this specific conformation leads to the formation of a trans-alkene (specifically,$trans-but-2-ene$).Therefore,the product is the Newman projection representing the trans-alkene configuration.

List-$I$ (Pair of Compounds)	List-$II$ (Isomerism)
$A$. $n$-propanol and Isopropanol	$(I)$ Metamerism
$B$. Methoxypropane and ethoxyethane	$(II)$ Chain Isomerism
$C$. Propanone and propanal	$(III)$ Position Isomerism
$D$. Neopentane and Isopentane	$(IV)$ Functional Isomerism

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