Please help me with this I'm confused

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.

Which type of family is also known as a "traditional family"? -single-parent -nuclear -blended -multigenerational

Which of the following statements is not true about body composition? a. too much body fat can lead to joint or bone disorders. b. body composition is influenced by numerous factors. c. body composition refers to a person's overall weight. d. lean body mass is the nonfat component of body composition