During the initial connection verification, what does the browser use to validate the digital signature on the server's certificate?

Answer

The CA’s public key

The browser retrieves the public key of the issuing CA from its pre-installed trust store and uses that public key to verify the digital signature found on the server's certificate.

During the initial connection verification, what does the browser use to validate the digital signature on the server's certificate?
technologysecuritycertificationdigital