To answer this question, the user needs to be familiar with the main components of the Visual Studio IDE, which is an integrated development environment used for software development.

Now, let's go through each option and explain why it is right or wrong:

A. Tool Box: This option is a main component of the Visual Studio IDE. The Toolbox provides a collection of controls and other elements that can be added to the design surface of a project.

B. Solution Explorer: This option is a main component of the Visual Studio IDE. The Solution Explorer displays the projects and files that make up a solution, allowing users to navigate and manage their code.

C. Start Menu: This option is not a main component of the Visual Studio IDE. The Start Menu is a feature of the Windows operating system and is not specific to Visual Studio.

D. Designer Window: This option is a main component of the Visual Studio IDE. The Designer Window allows users to visually design and edit forms, user interfaces, and other graphical elements of their project.

E. Properties Window: This option is a main component of the Visual Studio IDE. The Properties Window displays the properties and settings of a selected object or element, allowing users to modify and customize its behavior.

Therefore, the correct answer is:

The Answer is: C. Start Menu