Questions: PRACTICE IT inner sac in which the developing child rests mesoderm germ disc amnion endoderm ectoderm

The answer is: amnion.

Explanation for each option:

• Mesoderm: Incorrect. The mesoderm is one of the three primary germ layers in the early embryo that develops into muscles, bones, and the circulatory system.
• Germ disc: Incorrect. The germ disc is an early stage in embryonic development that forms the basis for the three germ layers.
• Amnion: Correct. The amnion is the inner sac in which the developing child rests, providing a protective environment.
• Endoderm: Incorrect. The endoderm is one of the three primary germ layers that forms the lining of the digestive and respiratory systems.
• Ectoderm: Incorrect. The ectoderm is one of the three primary germ layers that develops into the skin, brain, and nervous system.

Summary: The inner sac in which the developing child rests is called the amnion.