Final answer:
Tom Holland performed to 'Singin' In The Rain' and transitioned into Rihanna's hit song 'Umbrella' during a lip sync battle.
Step-by-step explanation:
The question involves Tom Holland's performance where he incorporated 'Singin' In The Rain' before channeling Rihanna's hit song. The correct answer to this is a) "Umbrella". Tom Holland performed a lip sync battle where he initially did a dance routine to 'Singin' In The Rain' and then transitioned into a performance of Rihanna's "Umbrella," complete with a rain sequence and dance choreography that echoed the famous tune. This iconic performance highlighted Holland's dancing skills and showmanship.