Triphenylmethane can be prepared by reaction of benzene and chloroform in the presence of AlCl3. Draw curved arrows to show the movement of electrons in this step of the reaction mechanism.

Reaction follows frieldel-craft alkylation mechanism

Explanation:

Reaction between benzene and chloroform in the presence of follows friedel-craft alkylation of benzeneFirstly, one equivalent of benzene adds onto chloroform by replacing one equivalent of Cl from chloroform.Remaining two equivalent of Cl in chloroform are similarly replaced by two equivalent of benzene to produce triphenylmethaneReaction mechanism has been shown below

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