Answer:100 percent of ticks on mice were infected with B. burgdorferi.
Explanation: Ticks become infected with B. burgdorferi if they feed on mice or other host infected with B. burgdorferi. B. burgdorferi is a type of harmful bacteria which is responsible for a disease called Borreliosis. It is also known as Lyme disease. It is mostly occurs from the biting of ticks infected by B. burgdorferiy. All the mice contains B. burgdorferi so 100 percent of ticks were infected by B. burgdorferi.
C. A heavy rainstorm. The text shows indication of a storm arriving. “Clouds arrived” are an indicator that clouds quickly appeared. “Lightning flashed” tells us these are storm clouds. It makes sense that next it would start raining, making the next event a heavy rainstorm.
