Because cmb radiation was throughout the universe, scientists can only relate the source to the big bang.
spread uniformly
spread sporadically
not found

how was cmb radiation first discovered?
penzias and wilson were looking for it using a radio receiver.
a radio receiver accidentally picked up its energy.
scientists saw it through a high tech telescope.
a mission of the cobe satellite found it.

1 The correct answer is that CMB radiation was spread uniformly throughout the whole universe.This was related to big band theory because this theory predicts that the universe was a very hot place and as it cooled down it should have been filled with laterally the remnant heat over from the Big Bang called as cosmic microwave background.

2 CMB radiation was discovered accidentally when Penzias and Wilson were performing some experiment and they noticed a ' hum' noise that was constantly detected by the antenna even after removing all the disturbing sources.

Then it was realized that it is cosmic microwave background radiation.

answer: the correct answer is   air pressure at the top of mount everest is higher than at the bottom of the grand canyon.

hope this : )

explanation: