Based on dating of meteorites, the oldest rocks found on Earth, we have concluded that our solar system formed about 4.56 __________ years ago.

Question

Quizplus · Accepted Answer

The age of the solar system is measured in billions of years, and therefore option C, which is billion, is the best choice. Option A, which is thousand, is too small a number, option B, which is million, is also too small, while option D, which is trillion, is too large a number for the age of the solar system.

Based on Dating of Meteorites, the Oldest Rocks Found on Earth