Choose the correct answer.
The gestation period of echidnas
The gestation period of opossums
The gestation period of antelopes
10 months
2 weeks
4-6 months
10 weeks
2 months
6-8 months
10 days
4 weeks
8-10 months
The gestation period of the giraffe
The gestation period of elephants
The gestation period of grey whale
253-264 days
18 months
13 months
453-464 days
9 months
653-664 days
22 months
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