Which of these technology tools would most likely impact pedestrian and vehicle safety in a community? GPS navigation
Traffic light cameras
Vehicle airbags
Painted crosswalks

I think it is either B or D but I don't really know.

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