Since elements have several lines in a spectrum, a spectrum graph can show

several inverted peaks for the same element. Also, elements with a lower
flux than the average of the spectrum will have an upright peak (see the
peak for helium). Which elements have the largest inverted peaks in the
graph?

1 answer

I'm sure it's a great graph, but it can't be posted here.
And what, you have the graph, and the instructions on how to read it, and you can't just look at it and answer the question?

I'm sure google can provide you with many examples of similar graphs and their meaning.