Evaluate If Possible $\sqrt { 81 }$ A) 9
B) 40
C) Not a Real Number
D)

question 23

Multiple Choice

Evaluate if possible.
- $\sqrt { 81 }$

• A) 9
• B) 40
• C) not a real number
• D) 10

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Definitions:

Ectoderm

The outermost layer of cells or tissue of an embryo in early development, which gives rise to the central nervous system, skin, and other structures.

Endoderm

The innermost layer of cells or tissue of an embryo in early development, which gives rise to the lining of some internal structures like the gut.

Blastocyst

An early stage of embryonic development characterized by a sphere of cells enclosing a fluid-filled cavity and the inner cell mass that will develop into the embryo.

Embryonic Disk

A key structure in early embryonic development from which the embryo forms, consisting of a flat, circular layer of cells.