In order to have an anonymous Internet surf, which of the following is best choice?

SSL/TLS protects data in transit from eavesdropping but does not anonymize the user's IP address or browsing identity in any way.

Tor (The Onion Router) routes traffic through a circuit of at least three volunteer-operated nodes, with each node knowing only the previous and next hop, preventing any single node from linking the sender to the destination. Each hop uses a separate layer of encryption, so traffic origin is effectively anonymized from both intermediaries and destinations. Multi-node routing is the key property that separates Tor from simpler anonymization methods.

Shared WiFi puts the user on the same network as untrusted parties and provides no anonymization - the user's traffic and IP address remain exposed.

A public VPN shifts trust to the VPN provider, who can log and identify user traffic, and does not provide true anonymity the way Tor's distributed multi-node routing does.