Final answer:
To have Ryan Adams' version of 'Bad Blood' play on his website, Bob will need a Public Performance License and a Synchronization License.
Step-by-step explanation:
To have Ryan Adams' version of 'Bad Blood' play on his website, Bob will need a Public Performance License (A) and a Synchronization License (C). The Public Performance License is required to publicly play the song, while the Synchronization License is needed to match the music with visuals on Bob's website. A Mechanical License (B) would be required if Bob wanted to reproduce the song on a physical medium, such as a CD. The Master Use License (D) would be needed if he wanted to use the actual recording by Ryan Adams.