Mrs.Mallard is afraid to live without her husband !
Answer: Plethora is a noun. Tranquility is a noun. Conundrum is a noun.
Explanation:
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.
the correct answer is B. Sestina - APEX