Approximately how old is the sun?
a. 1.4 billion years
b. 2.1 billion years
c. 4.6 billion years
d. 10.2 billion years

The answer is C. 4.6 billion years. Hoped I helped. :)

It has to be b i hope this

Hello thereone of the following properties was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version. which property fits this description? answer: atomic mass  was originally used to arrange elements on the periodic table, but is no longer used to organize the modern version.