What are supernovae? O 'A stars that have reached the end of their lifetimes because their nuclear fuel is exhausted O
B. stars that suddenly brighten by 100 to 10,000 times in a day O

C. stars that have just been born O

D. galaxies that have binary systems

There is no graph to look at on here, but i shall explain them to you. a line graph is just in its title it’s a graph with a line running through the dots to show an increase or decrease. a bar graph is used to show how much or how little something is so a comparison. a scatter plot is used to graph points to tell the data. and i don’t know what a histogram is.

A,d, and e on edgunuity