About how long ago did our solar system start to form?

A:About 5 million years ago
B:About 14 million years ago
C:About 5 billion years ago
D:About 14 billion years ago

C- About 5 bill yrs ago

Explanation:

did the assignment

economic impact of malaria is estimated to cost africa $12 billion every year. this figure factors in costs of health care, absenteeism, days lost in education, decreased productivity due to brain damage from cerebral malaria, and loss of investment and tourism.

geologic time scale (for gradpoint) =)