Major product of the reaction is

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(C) The reaction involves the dehydration of the given alcohol in the presence of $conc. \ H_2SO_4$. $1$. The hydroxyl group $(-OH)$ is protonated by

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(C) The reaction involves the dehydration of the given alcohol in the presence of $conc. \ H_2SO_4$. $1$. The hydroxyl group $(-OH)$ is protonated by $H^+$ to form an oxonium ion,which then leaves as a water molecule to form a stable carbocation. $2$. This carbocation undergoes an intramolecular Friedel-Crafts alkylation reaction. $3$. The carbocation attacks the ortho position of the adjacent phenyl ring,leading to the formation of a five-membered ring fused to the two benzene rings. $4$. The final product is $9,9-diphenylfluorene$.

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