Which controversial marketing tactic did Nike use during the 1996 Atlanta Olympics that led to new regulations against 'ambush marketing' despite not being an official sponsor?

Nike's marketing strategy during the 1996 Atlanta Olympic Games caused a major disruption in sports advertising. While not an official sponsor, the company deployed a bold guerrilla marketing campaign that changed how brands approach major sporting events. This poll tests your knowledge about this pivotal moment in sports marketing history that forced the International Olympic Committee to create stricter regulations about ambush marketing tactics.

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Gave free Nike shoes to all American gold medal winners to wear on podiums, despite Reebok being the official sponsor
Aired commercials featuring Olympic athletes that never explicitly mentioned the Olympics but used imagery evoking the games
Built a massive 'Nike Park' complex adjacent to Olympic venues, drawing visitors away from official sponsor areas
Secretly paid broadcasters to focus camera time on Nike-wearing athletes during events