If a base $($represented as $"$B:$")$ reacts with the most acidic proton on the given compound, where is the proper location for the end of

the curved arrow shown? Select the correct circled position for the terminus of the arrow.

The structure of the compound is shown. The compound is benzoic acid with a SMILES string of $O=C(O)c1ccccc1.$ Carbon $C1$ is the

carbon on the ring bonded to the $\frac{C}{O}OH$ group and $C2$ is the carbon next to it on the ring. The remaining carbons on the ring are

numbered consecutively. Several atoms are labeled by letters. Letter $"$a$"$ labels C$2.$ Letter $"$b$"$ labels the hydroxyl oxygen $($OH$).$ Letter

$"$c$"$ labels the carbonyl oxygen $($oxygen that forms a double bond with carbon$).$ Letter $"$d$"$ labels the hydrogen bonded to the hydroxyl

oxygen. A general base represented by the B and a lone pair of electrons is shown to the side with a curved arrow directed towards

the compound.

a

d

c

b