Answer:
In the main idea or point used in an essay. It is usually made at the introductory paragraph where supporting paragraph are then used to support the statement. You know how we write topic sentence in a paragraph.. A thesis statement is almost the same but in an essay that statment if focused on throughout the whole essay.
I need the sentence to answer this
Group of stars.
An appositive or appositive phrase renames a noun or pronoun that is right beside, specifically after, it. It is usually used to provide additional information, like a definition or clarification. In this sentence, "group of stars" is defining "constellations" making it the appositive phrase.