To complete the sentence, the answer would be the word "gather". Assemble is a synonym for "gather". Assemble means to gather something or someone together. Other synonyms include: build, collect, meet and congregate. The word "assemble" comes from the Latin words "ad-" meaning to and "-simul" meaning together.
Answer:
3 is the correct answer your welcom3
But how to answer, you have not even told the name of the Poem.