Based on the given sentence above, the appositive phrase here is the "triplet sisters". When we say appositive, this is a word or phrase that renames the subject that follows it. In this case, this appositive renames <span>"Laura, Lisa, and Lynn". Hope this answers your question.</span>
<span>b. to understand the journey of his people. </span>
1. The whole class laughed loudly at the story.
complete subject: the whole class
complete predicate: laughed loudly at the story
2. The whole class laughed loudly at the story.
simple subject: class
simple predicate: laughed
3. Twelve hours passed without a word from any of the group.
simple subject: hours
simple predicate: passed
4. The workmen repaired the dam.
complete subject: the workmen
complete predicate: repaired the dam