Figure 1 best confirms which claim made in the passage? 

A) “For the first 380,000 years of its life . . . the universe was ‘invisible’” (lines 24–26) 

B) “The CMB radiation did not originate from just one point in space” (lines 53–54) 

C) “The expanding universe would have cooled this radiation to below 5 degrees Kelvin today” (lines 66–67) 

D) “CMB radiation . . . has a nearly perfect blackbody spectrum” (lines 85–87)

Transcribed Image Text:

Radiation Intensity COSMIC BACKGROUND RADIATION SPECTRUM FROM COBE AND BLACKBODY RADIATION CURVES FOR VARIOUS TEMPERATURES 3⁰ K 2.725° K 20 K xxx +=COBE data 2 4 6 8 10 12 14 16 18 20 22 Radiation Frequency (cm-¹) Figure 1. Comparison of COBE radiation data to blackbody curves for 2° K and 3° K