Final answer:
A Transmission Electron Microscope (TEM) is the most suitable for examining the interior of a virus due to its high magnification capacity and resolution.
Step-by-step explanation:
The type of microscope best suited for examining the interior of a virus is a Transmission Electron Microscope (TEM). This is due to its capability to achieve high magnification up to 100 million times and resolve details as small as 0.1 nm (10-10 m). While other microscopes, such as scanning electron microscopes or light microscopes, also offer high magnification and specialize in surface details or thicker structures, the TEM's ability to view extremely small components like those within a virus's interior makes it the most appropriate choice.
The other options, such as the Scanning Electron Microscope (SEM) and Compound Light Microscope, are not well-suited for examining the interior of a virus.