A Summary of the green killer

He began murdering women in 1982 and was caught in 2001 when a DNA test revealed a match. Ridgway told investigators he killed as many as 75-80 women along Route 99 in south King County, Washington. He was convicted and received multiple life sentences.

answer: b (host)

viruses use the cells of living organisms to reproduce. the cell which is used by virus is called as "host cell". it is a living cell in which virus multiplies, example bacteria, plant or an animal cell.

in this, the virus is a parasite, which uses host cell for its benefit (reproduction) by using the cell machinary of host cell.