Final answer:
Streaming platforms generally pay out approximately 70% of their revenues to music rights holders, which can include record labels, songwriters, and artists.
Step-by-step explanation:
The question asks about the percentage of revenues streaming platforms pay for all rights to music. While the question lists percentages as potential answers, the actual percentage can vary based on agreements between the streaming service and rights holders. However, as a general trend, streaming platforms pay out approximately 70% of their revenues to rights holders, which include record labels, songwriters, and artists. This payout percentage is a result of industry standards and the negotiation leverage of major music labels and entities.