The normal gestation period is:
a. 266 days from the onset of the last menstrual cycle before conception.
b. 280 days from the date that fertilization was assumed to have taken place.
c. 280 days from the onset of the last menstrual cycle before conception.
d. 266 days regardless of the onset of the last menstrual period.
C
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Fill in the blank(s) with the appropriate word(s).
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