## **Core Concept**
The skeletal framework of a cell, also known as the cytoskeleton, provides structural support, shape, and mechanical stability to the cell. It is composed of three main components: microtubules, microfilaments, and intermediate filaments.

## **Why the Correct Answer is Right**
The correct answer, **C. Cytoskeleton**, is right because the cytoskeleton is indeed responsible for maintaining the cell's shape and providing a framework for cellular organelles and structures. It plays a crucial role in cell division, movement, and intracellular transport. The cytoskeleton is made up of:
* **Microtubules**: composed of tubulin, involved in maintaining cell shape and forming the spindle fibers for chromosome separation during cell division.
* **Microfilaments**: composed of actin, involved in cell signaling, muscle contraction, and cell division.
* **Intermediate filaments**: provide mechanical support and fix the position of organelles.

## **Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because it does not specify a known component of the cell that maintains its skeletal framework.
* **Option B:** This option is incorrect because, although the cell membrane provides the boundary of the cell, it does not provide the skeletal framework.
* **Option D:** This option is incorrect because organelles are specialized structures within the cell, but they do not collectively provide the skeletal framework.

## **Clinical Pearl / High-Yield Fact**
A key point to remember is that the **cytoskeleton** is crucial for maintaining cell shape and is involved in various cellular processes such as cell division and movement. Dysregulation of the cytoskeleton has been implicated in various diseases, including cancer and neurodegenerative disorders.

## **Correct Answer:** . Cytoskeleton