Helppp Which of the following is a voluntary standard?

a) state childcare regulations
b) guidelines for out-of-home childcare
c) nutrition guidelines
d) state licensing regulations

Viruses ) manufacture their own atp, proteins, and nucleic acidsb) use the host cell to copy themselves and make viral proteinsc) use the host cell to copy themselves and then viruses synthesize their own proteinsd) metabolize food and produce their own atp