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(C) The reaction proceeds in two steps:$1$. The reaction of $1$-tetralol with $TsCl$ (p-toluenesulfonyl chloride) in the presence of pyridine converts

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tetralin ($1$,$2$,$3$,$4$-tetrahydronaphthalene)

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(C) The reaction proceeds in two steps:$1$. The reaction of $1$-tetralol with $TsCl$ (p-toluenesulfonyl chloride) in the presence of pyridine converts the hydroxyl group into a good leaving group,the tosylate group $(-OTs)$,forming $1$-tetralyl tosylate as product $(A)$.$2$. The reaction of $(A)$ with $LiAlH_4$ (a strong reducing agent) results in the nucleophilic substitution of the tosylate group by a hydride ion $(H^-)$,which reduces the $C-OTs$ bond to a $C-H$ bond,yielding tetralin ($1,2,3,4$-tetrahydronaphthalene) as product $(B)$.

Product $(B)$ is

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