Read the sentence.We asked Ahmad to notify us if he was not coming through e-mail.Which is the best revision of this sentence?

The phrase “through e-mail” should describe how Ahmad should notify us, so it belongs next to “notify us.” Choice C makes that meaning clear: “We asked Ahmad to notify us through e-mail if he was not coming.” In the original sentence, the phrase could mistakenly sound as though Ahmad was not coming through e-mail.

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