Our universe is approximately 13.7 _________ years old.
A) million
B) billion
C) trillion
D) thousand
E) hundred

Question

Quizplus · Accepted Answer

The age of the universe is generally estimated at around 13.7 billion years old, based on observations of cosmic microwave background radiation and other evidence. The other options are much too small (million, thousand, hundred) or much too large (trillion) to match the age of the universe.

Our Universe Is Approximately 13.7 _________ Years Old