Which of the following statements is a mad goal?
i want to play professional football for my favorite team after i finish college.
i want to reach a skeet shooting score of 85 percent at the next competition. i want to beat the county record for the 100-meter hurdles this year.
i want to catch 65 fish while camping with my friends next week.

Viruses use the host's machinery to make copies of themselves. however, some human viruses require a type of replication that humans do not normally have. for example, humans normally do not have the ability to convert rna into dna. how can these types of viruses infect humans, when human cells cannot perform a particular role that the virus requires? a) the virus causes mutations in the human cells, resulting in the formation of new enzymes that are capable of performing these roles. b) the viral genome codes for specialized enzymes not in the host. c) the virus infects only those cells and species that can perform all the replication roles necessary. d) viruses can stay in a quiescent state until the host cell evolves this ability.