Respuesta :
In all vertebrate animals, development requires option(c) i.e, extraembryonic membranes.
The extraembryonic membranes, often known as foetal membranes, are membranes connected to the growing foetus. The amnion and the chorion, which make up the amniotic sac that envelops and safeguards the foetus, are the two chorioamnionitis membranes. The allantois and yolk sac are the other foetal membranes.
Four extra-embryonic membranes, including reptiles, birds, and mammals, are frequently seen in vertebrates. The yolk sac, allantois, amnion, and chorion are each one of them. These membranes offer defence and a way to move nutrients and waste. tissues outside of the ovum that house the foetus during pregnancy. They offer the assistance needed to facilitate fetal development.
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