Answer :
Option d is correct. "The earliest age at which his past IQ score closely matches his current IQ is not possible to determine".
According to the given scenario, Levar is 63 years old and we need to determine the earliest age at which his past IQ score closely matches his current IQ. However, this is not possible because as a person gets older, their IQ tends to change as well.IQ tests are usually designed to test the intelligence of people of a certain age. As a result, it would be inaccurate to compare the IQ scores of someone at a different age group.
Moreover, even if Levar's past IQ score closely matches his current IQ, there is no guarantee that his IQ would have remained consistent throughout his lifetime. Therefore, it is not possible to determine the earliest age at which his past IQ score closely matches his current IQ. Therefore option d is correct.
To know more about current IQ refer here : brainly.com/question/28330176
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