Precursor cells of which of the following embryonic tissues pass through the primitive streak?

Question

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The primitive streak is a structure that forms in the blastula during the early stages of embryonic development in birds and mammals. It is involved in the formation of the three germ layers: ectoderm, mesoderm, and endoderm. However, the options given (A: Cytotrophoblast, B: Syncytiotrophoblast, C: Yolk sac endoderm, D: Amniotic ectoderm) do not pass through the primitive streak during development. The cytotrophoblast and syncytiotrophoblast are part of the placenta, the yolk sac endoderm is derived from the hypoblast, and the amniotic ectoderm is part of the amnion, which does not form through the primitive streak.

Precursor Cells of Which of the Following Embryonic Tissues Pass