Answer: The fluid part of the fluid Mosiac model mean "how certain parts of the membrane, if not attached to other parts of the cell, can move freely around".
Explanation:
The Fluid Mosaic Model explains that membranes consist of a Phospholipid Bilayer with several protein molecules floating within, that act as channels through which other molecules enter and leave the cell. The fluid part of the fluid Mosiac model mean "how certain parts of the membrane, if not attached to other parts of the cell, can move freely around".
The cell membrane's fluid mosaic model discuss how scientists explain what the cell membrane looks like and how it functions, as it is formation of a bunch of different molecules scattered across the membrane.