I think that it is B: Joyful, because there is no distress, such as, "Hurry, the queen has been killed!" or an angry description. The tone is very calm but the best answer would be joyful, as singing is usually joyful.
Answer:
It is called a noun clause
Explanation:
A clause that may be used as a subject complement is called a noun clause.
Answer:
A or D im not 100% sure but i think its D. you can look it up just incase im incorrect.
Explanation:
The answer is D to express an attitude.