Which among the following is the strongest o, | vedclass

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(A) The strength of an $o, p-$directing group is determined by its ability to donate electron density to the benzene ring via the resonance effect ($+

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$OH$

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(A) The strength of an $o, p-$directing group is determined by its ability to donate electron density to the benzene ring via the resonance effect ($+R$ or $+M$ effect).Among the given options:$1$. $-OH$ has a strong $+R$ effect due to the lone pair on oxygen,making it a powerful activating group.$2$. $-Cl$ and $-Br$ are deactivating groups due to their strong $-I$ effect,although they are $o, p-$directing due to the $+R$ effect.$3$. $-C_6H_5$ (phenyl group) is an activating group but is weaker than $-OH$ in terms of electron donation to the ring.Therefore,$-OH$ is the strongest $o, p-$directing group among the choices provided.

Which among the following is the strongest $o, p-$directing group?

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