How do you obtain carbon?

Can you please elaborate on the process of obtaining carbon? Are there multiple methods of extraction, and if so, which one is the most prevalent? What factors contribute to the decision-making process when selecting a particular method of carbon acquisition? Is there a difference in the quality or purity of carbon obtained through different methods? Are there any environmental considerations or impacts associated with the various methods of carbon extraction? How does the availability of carbon sources affect the production and pricing of carbon-based products?