Toluene is heated with 3 mol of $Cl X_{2}$ in sunlight, giving a trichloro compound. This is boiled with aqueous $NaOH$ and then acidified. The final organic product is

Answer: C

Three chlorines substitute the three benzylic hydrogens:

C X_{6} H X_{5} - CCl X_{3}

(benzotrichloride). Hydrolysis of the three C-Cl bonds on one carbon gives

C X_{6} H X_{5} - C (OH) X_{3}

, which loses water to form the carboxylate. Acidification gives benzoic acid. Benzaldehyde would result from

C X_{6} H X_{5} CHCl X_{2}

(2 mol of

Cl X_{2}