Final answer:
The primary theme in a Bhajan is typically performed in the middle register, which is suitable for group singing and is where the emotional and spiritual earnestness of the song can be effectively expressed.
Step-by-step explanation:
The Bhajan is a type of Indian devotional song. The correct answer to the question regarding the register in which the primary theme of a Bhajan is usually performed is A. False, the primary theme is usually performed in the middle register. In Bhajans, the melodies are often simple and designed to be easy for many people to sing together. This typically places the primary theme within the middle register, making it accessible for the average human voice across different age groups and vocal ranges. It's in this register that the emotional and spiritual earnestness of the Bhajan can be most effectively conveyed. While variations can occur, with parts of the song going lower or higher, the primary theme and bulk of the song usually stays within the middle register.