1. The triplets could sing very well, so they and a friend formed a ______ for the annual talent show.
Answer: B
The triplets and their friend formed a quartet for the annual talent show.
The term "quartet" refers to a musical group consisting of four members, which fits perfectly as the triplets plus their one friend make a total of four singers.
A) duet
A duet consists of two performers. Since there are four individuals in this scenario, this option is incorrect as it does not represent the total number of participants adequately.
B) quartet
A quartet is a group of four performers, making this option the correct choice since the triplets and their friend total four individuals, aligning perfectly with the definition of a quartet.
C) octet
An octet refers to a group of eight performers. This option is incorrect because it exceeds the number of participants in this situation, which consists of only four individuals.
D) quintet
A quintet comprises five performers. Given that there are only four individuals involved, this option is incorrect as it does not match the number of singers in the group.
Conclusion
The correct answer, "quartet," accurately describes the group of four individuals formed by the triplets and their friend. All other options fail to represent the total number of participants, making them unsuitable for this context. Thus, "quartet" is definitively the only correct choice.