Roberta's science class is going on a field trip, and her teacher asks students to make suggestions about where they should go. roberta decides to write a letter to her class explaining why they should go to the planetarium. roberta decided to begin her letter with this sentence: the planetarium is not crowded on wednesdays, so we should visit it then. is this sentence an appropriate opening sentence for the persuasive purpose? a) yes, because it does not give students any other options b) no, because some students may want to go on a different day c) no, because it gives no details to make the students want to go d) yes, because it tells students a specific day they can go on the trip