Which attacking species shown below would be the best choice to enforce an E2 pathway over...

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Which attacking species shown below would be the best choice to enforce an E2 pathway over an Sp2 pathway for the reaction be

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# CH3 (443 -(-iltz CH3 8+ C-CH₃ H---O CH3 ER S- BY HBY to ea non-nucleophilic base e. - Answer is Note: please Give Rating Sc

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