Vaping was new, and it takes time to create adequate regulations. (Option A).
Why has vaping industry gone largely unregulated?
The Food and Drug Administration (FDA) has been working on regulating vaping products, but vaping was new, and it takes time to create adequate regulations.
Vaping products were relatively new compared to traditional tobacco products, and regulatory agencies often require time to assess risks, gather scientific evidence, and develop effective regulations.
Thus, option A, vaping was new, and it takes time to create adequate regulations, is the most accurate explanation based on historical developments.