Answer: Antiviral, immunomodulatory and anticancer
Explanation:
Interferons are the group of proteins secreated by the host cells in response to viral attack, requirement of modulation of immune system and for prevention of cancerous growth in the body.
In presence of several virus in the body the infected cells produce and release interferons to protect unaffected cells from the infection.
Interferons triggers protective defenses of the immune system that will help in eradicating the pathogens.
The immune system in the presence of interferon finds and kill the melanoma cells of cancer.