With age, which of the following becomes more rigid?

You are on scene of a serious motor vehicle collision. As the officer in charge, which one of the following instructions for other rescuers is most appropriate?

A) "Let's make sure to put cones around the cars." B) "We need to route passing traffic no more than 20 feet around the scene." C) "Park the ambulance downhill to make movement of the patient easier." D) "Let's stop all traffic and reroute it to alternative roadways."

Which of the following dietary factors may increase cancer risk?

A) Low-nitrate intake B) High-fiber intake C) High-intake of red and processed meats D) High-intake of antioxidants