Female birds lay their eggs, thereby facilitating flight by reducing weight. Which "strategy" seems most likely for female bats to use to achieve the same goal?
A) limit litters to a single embryo
B) refrain from flying throughout pregnancy (about six weeks long)
C) give birth to underdeveloped young, and subsequently carry them in a pouch that has teats
D) feed multiple embryos internally using placentas
A
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