Form 2210 is used to see if you owe a penalty for underpaying your estimated tax. Part II, D is checked if you want you want to figure your penalty based on the dates of your withholding.
For more information, refer to the TurboTax articles How do I add Form 2210?, Form 2210 Instructions: How to Calculate and Pay Estimated Taxes to Avoid Penalties and What is Form 2210?
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