Why does a story need multiple types of characters?

The associated press is a wire service in of news around the world. 1.portable 2.importer 3.reporter 4.transport which will fill in the blank need plz

In a group discussion, which statement most clearly uses evidence to support a conclusion? a) the author makes some good points, but i feel that he’s ultimately biased. b) the author proves that he’s biased when he uses terms like “silly” and “stupid”. c) the author obviously hates the way fast food tastes, which is why he’s negative. d) the author first criticizes fast food, and then goes in to criticize junk food.

This excerpt is from the poet by alfred lord tennyson the poem describes a poets consciousness and perception which three lines suggests the richness of a poets thoughts