Why did they attack Omaha Beach?

I think they attacked Omaha Beach because the Allies think that's the only way they could push through Europe and into German soil to end the war machine, the Axis.

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HE IS WRONG There wer actually 5 beaches: Ohmaha, Utah, SWord, Juno, & Gold. These were all attacked in The Allies desperate hope to turn the war around, which was actually an unexpected victory for The Allies.