To answer this question, we need to understand the relationship between "play" and "actor" and find the option that has a similar relationship.
In a play, an actor is a person who performs on stage. Similarly, in a concert, a musician is a person who performs music.
Let's go through each option to understand why it is correct or incorrect:
Option A) Symphony - This option is incorrect. While a symphony is a type of musical composition, it does not represent the performer in a concert.
Option B) Musician - This option is correct. In a concert, musicians are the performers who play musical instruments or sing.
Option C) Piano - This option is incorrect. While a piano is a musical instrument often used in concerts, it does not represent the performer.
Option D) Percussion - This option is incorrect. Percussion refers to a category of musical instruments, but it does not represent the performer in a concert.
The correct answer is option B) Musician. This option is correct because, like an actor in a play, a musician is the performer in a concert.