2. The simple sneeze is actually a complex reaction. The impulse to sneeze comes from the irritation of a group of nerves in back of the eyes. When the signals reach the brain, the body takes a quick breath, then muscles contract violently. Finally, the sound "achoo!" comes out. What is the initial cause of sneeze?
A. Eyes are irritated.
B. Nerves are imitated,
C. The brain is signalled. D. Muscles contract violently.

please answer this​