Final answer:
In a 3/8, 6/8, or 9/8 time signature, an eighth note receives one beat.
Step-by-step explanation:
An eighth note represents one eighth of a whole note in music notation. In a 3/8 time signature, the top number indicates the number of beats per measure, while the bottom number represents the type of note that receives one beat. So, in a 3/8 time signature, an eighth note receives one beat. Similarly, in a 6/8 time signature, there are six beats per measure, and an eighth note still receives one beat. In a 9/8 time signature, there are nine beats per measure, and an eighth note still receives one beat.