Which of the following is one of the things used to determine the age of the universe? speed of light of other galaxies

gravity of other galaxies

radiation of other galaxies

distance from Earth to other galaxies

Explanation:

Astronomers estimate the age of the universe in two ways:

1) by looking for the oldest stars.

2) by measuring the rate of expansion of the universe and extrapolating back to the Big Bang; just as crime detectives can trace the origin of a bullet from the holes in a wall.

what are the options?

i believe that if you say you can, you cant and if you say you can't your right. i believe i can do anything i set my mind to. i've applied this with my everyday life. it me get motivated to do stuff.for example, i apply this to do school. if i believe i can finish a whole class in a couple of week's i will be motivated to do the class until i finish it, and if i believe i can't, i will get distracted and do other stuff besides doing my work. it changed me by believing i can accomplish anything i set my mind to.