They define data broker as someone who collects and sells your data. Companies like Facebook and Google do not sell data they collect, contrary to what a lot of people assume.

The page refers to 500 data brokers, but I’d like to find the complete list they use.

https://cppa.ca.gov/data_broker_registry/

It would be unexpected if signing the form meant that your gmail is deleted and your facebook account is closed.

> 1798.99.80. (c) “Data broker” means a business that knowingly collects and sells to third parties the personal information of a consumer with whom the business does not have a direct relationship. [1]

If you want to be both obtuse and pedantic about it, the answer is yes to all three.

[1] https://legiscan.com/CA/text/SB362/id/2845350