An infant's brain is what portion of the weight of an adult's brain?
a. one-fourth c. one-half
b. one-third d. two-thirds
D
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A Incorrect. An infant's brain weight that is one-fourth the weight of an adult's brain would warrant further evaluation.
B Incorrect. An infant's brain weight that is one-third the weight of an adult's brain would warrant further evaluation.
C Incorrect. An infant's brain weight that is one-half the weight of an adult's brain would warrant further evaluation.
D Correct. At birth, the infant's brain weight is approximately two-thirds the weight of an adult's brain.
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