The percentage of the working population involved in the gig economy by doing some type of independent work can vary depending on the source and year of the data. However, as of the latest data available up to October 2023, estimates suggest that around 10-30% of the workforce in both the US and Europe is engaged in some form of gig or independent work.
Based on the options provided, if I had to select a range that aligns most accurately, I would choose 10-20% for the gig economy participation in both regions. This encompasses the more conservative estimates while acknowledging that specific sectors may vary.