Q--Do drummers need spare strings?
A--My step-by-step reasoning: Drummers usually work with guitarists or other stringed instrumentalists. However, drum sets do not contain strings. Musicians usually change their own strings as necessary, so it is their band mates, not the drummer, who carries the spare strings.
So, the answer is no.

Q--Is it normal for people to sing when the YMCA is mentioned?
A--My step-by-step reasoning: The YMCA was written about in a widely popular song by "The Village People". The Village People's song "YMCA" had an easy to do and very popular dance routine that went with it. The song "YMCA" is extremely well known.
So, the answer is yes.

Q--Was King Kong (2005 film) the lead actress's biggest box office role?
A--My step-by-step reasoning: Naomi Watts starred in King Kong (2005 film). Naomi Watts has starred in several movies such as Divergent and the RIng. Divergent: Insurgent made 295 million at the box office worldwide . The Ring made 248 million at the box office worldwide . King Kong (2005 film) made 550 million at the box office worldwide.
So, the answer is yes.

Q--Were plants crucial for The King of Rock'n Roll's snack with bananas?
A--
My step-by-step reasoning: Elvis Presley is known as The King of Rock'n Roll. Elvis Presley loved to eat peanut butter and bananas. Bananas come from banana plants. Peanut butter comes from peanuts, which come from peanut plants.
So, the answer is yes.