Primary sources would be best
Answer:
C. Dow Jones
Explanation:
It’s the Dow Jones certainly, and we also know it as Dow 30. You will find with a little research that Dow Jones is an index of the 30 carefully chosen blue-chip stocks, and general industrial stocks. And this is price prejudiced average, and of 30 stocks that can be well-thought-out as an all-purpose measure for the whole stock market performance.
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If you want an online presentation, I think you mean by a website.
Best thing you can find is Google Slides.
if you want a program,
LibreOffice is your best bet. It is completely free and it is for Linux, Windows and possibly Mac.