Questions 3 and 4 will be based on the following news item.

A．She blushed when talking to a group of people.
B．She couldn"t help looking at a sign when she gave a presentation.
C．She didn"t know the answer to the professor"s question.
D．She felt embarrassed talking to the man.

A．It is obviously a mental process.
B．It is more of a physical process than a mental action.
C．It is a process that involves one"s entire body.
D．It involves the muscles as well as the brain.