**Core Concept**
The fluid mosaic model is a biological theory that describes the structure and function of cell membranes. It proposes that the membrane is composed of a phospholipid bilayer with embedded proteins, which are free to move within the membrane, creating a dynamic and fluid structure.

**Why the Correct Answer is Right**
The fluid mosaic model was first proposed by S.J. Singer and Garth Nicolson in 1972. According to this model, the cell membrane is a dynamic structure composed of a phospholipid bilayer, with embedded proteins that are free to move within the membrane. This mobility allows the proteins to interact with each other and with the surrounding phospholipids, enabling the membrane to perform various functions such as transport, signaling, and cell-cell recognition.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because the fluid mosaic model was not proposed by Robert Hooke, who is known for his discovery of cells.
**Option B:** This option is incorrect because the fluid mosaic model was not proposed by Louis Pasteur, who is known for his work on vaccination and germ theory.
**Option C:** This option is incorrect because the fluid mosaic model was not proposed by Francis Crick, who is known for his discovery of the structure of DNA.

**Clinical Pearl / High-Yield Fact**
The fluid mosaic model highlights the dynamic nature of cell membranes, which is essential for various cellular functions such as transport and signaling. This concept is crucial for understanding the behavior of membrane lipids and proteins in health and disease.

**Correct Answer: C. S.J. Singer and Garth Nicolson