Q:Fact 1: Viruses cannot reproduce by themselves. Fact 2: Viruses attach themselves to cells and reproduce. Given the two facts above, answer the question "How can viruses make copies of themselves?" with the following options: - A compound that donates proton - attach themselves to cells - have sex with another virus - distances themselves from cell - attach themselves to viruses - it needs them - rapid expansion - By wind and rain
A:
attach themselves to cells