Question: Which of the following is best known for his musical duo Wham!: Paul Day or George Michael?

Context paragraphs:
The Edge of Heaven: "The Edge of Heaven" is a song by British pop duo Wham! , released on Epic Records in 1986.  It was written by George Michael, one half of the duo, and was promoted in advance as Wham! 's farewell single.

Bad Boys (Wham! song): "Bad Boys" was a song by British pop duo Wham!  which was a hit in 1983.  It was written by George Michael, one half of the duo, and released on Innervision Records.

George Michael: Georgios Kyriacos Panayiotou (25 June 1963 – 25 December 2016), known professionally as George Michael, was an English singer, songwriter, record producer, and philanthropist who rose to fame as a member of the music duo Wham!  He was best known for his work in the 1980s and 1990s, including hit singles such as "Wake Me Up Before You Go-Go" and "Last Christmas", and albums such as "Faith" (1987) and "Listen Without Prejudice Vol.  1" (1990).

Make It Big: Make It Big is the second studio album from British pop duo Wham! , released in 1984.  It was mostly recorded at Studio Miraval in Southern France to escape the press and enable George Michael to work peacefully and mixed at Good Earth Studios in London and Marcadet Studios in Paris.  In comparison to their earlier work, the duo had more control over the album's production, as George Michael became the sole credited producer, a position he would subsequently hold on all future releases until the group split in 1986.  The album was a critical and commercial success, hitting number one in both the UK and the US and spawning four singles, all topping the charts on both sides of the Atlantic.

Wham Rap! (Enjoy What You Do): "Wham Rap!  (Enjoy What You Do)" is the debut single by British pop duo Wham!  on Innervision Records, released in 1982.  It was written by Wham!  members George Michael and Andrew Ridgeley.

Young Guns (Go for It): "Young Guns (Go for It)" (mostly written with an exclamation mark as "Young Guns (Go for It!)")  is a song by British pop duo Wham!  which was released in 1982 on Innervision Records.  It was written by George Michael, one half of the duo.

Freedom (Wham! song): "Freedom" is a hit song by British pop duo Wham! .  It became the group's second number one hit on the UK Singles Chart and reached number three in America.  It was written and produced by George Michael, one half of the duo.

Paul Day (musician): Paul Mario Day (born 19 April 1956, Whitechapel, East London) is a British singer who is well-known as the original lead vocalist of Iron Maiden from 1975 to 1976.

Everything She Wants: "Everything She Wants" is a million-selling Gold-certified hit single by British pop duo Wham! , originally released in 1984 on Columbia Records on a double A-side with "Last Christmas".  It was written and produced by George Michael, one half of the duo, becoming their third consecutive million-selling number one hit in the United States.

Wham!: Wham!  was an English musical duo formed by members George Michael and Andrew Ridgeley in 1981.  They were briefly known in the United States as Wham!  UK due to a naming conflict with an American band.  Wham!  sold more than 28 million certified records worldwide from 1982 to 1986.

Supporting paragraphs: Paul Day (musician) George Michael
Answer: George Michael