rapid genetic mutation in infected cells. consumption of the body's energy resources by viruses. release of toxins by viral particles. body's inflammatory response to infected cells.
The symptoms of influenza infection are partly caused by the

Options:
- rapid genetic mutation in infected cells.
- consumption of the body's energy resources by viruses.
- release of toxins by viral particles.
- body's inflammatory response to infected cells.

body's inflammatory response to infected cells.