Most probably the right choice for this is <u>A. extraembryonic membranes</u> because this is known as the structural adaptation in chickens that allows them to lay eggs in arid environments rather than in water.
The four extraembryonic membranes that surround the chick's embryo are the chorion, which helps with gas exchange, the amnion, which encloses amniotic fluid, the yolk sac, which protects the yolk, and the allantois, which helps with waste removal and gas exchange.
Physical traits that have evolved on chickens through time in order to help them live and reproduce are called structural adaptations.
Over time, the hens that are more well-adapted to their surroundings survive and breed more consistently, causing their genes and adaptations to be passed down to future generations of chickens.
Learn more about the two adaptations to plants: brainly.com/question/22557205
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A living creature. Plants and animals.