<span>This suggests that Trey has not yet developed a legitimate understanding of the permanency of tangible objects. This can be evidenced by the fact that Trey lost interest in the ball once it was no longer in his range of sight. He has not yet learned that the object does not just disappear if he is unable to see it.</span>
An income tax is a tax imposed on individuals or entities (taxpayers) that varies with the income or profits (taxable income) of the taxpayer. Details vary widely by jurisdiction.
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