The purpose is to influance the way her poems are read and understood. The dashes are used as to pause, to cause reflection, but also give the word strength. Exclamation points are used at the end of the verses where you can here ones overwhelmed by what one said. The commas are used as a description of one incomplete thought and confustion as they break down from one deep thought to another deep thought. I hope this helped.
I never know what to get him for his birthday; perhaps I will get him a bicycle.
The semicolon links two independent clauses that are related in thought and are given equal rank.
I believe its either A or D. "I want your laughter like the flower i was waiting for", it refers to the flower as the rose of his echoing country, and so it feels necessary, and his pride and longing in it.
I very much like it! You did good. lots of love.