Freddie chose to become a teacher, because he cares about educating young adults and improving their lives. Of the reasons people work, the best match for why Freddie works is to . A. Pay for wants and needs b. Be around others c. Make a contribution d. Be self-fulfilled Please select the best answer from the choices provided A B C D.

Which of the following processes within viral replication is the greatest source of genetic variation in rna virus populations? a) high mutation rate due to lack of proofreading of rna genome replication errors.b) transcription from the host cell rna polymerase introduces numerous mutations.c) capsid proteins from the host cell can replace the viral capsid.d) viral rna is translated by host cell ribosomes.