Which of the Following Statements About a Blastocyst Is True

question 80

Multiple Choice

Which of the following statements about a blastocyst is true?

• A) It consists of a single cell.
• B) By the fourth day, it is a hollow, fluid-filled ball made up of 60 to 70 cells.
• C) It is a membrane that helps to keep the temperature of the prenatal world constant.
• D) It is connected to the developing organism by the umbilical cord.

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