Playwrights use meter to help the audience follow what is happening in the play. A syllabic pattern, whether it is stressed or unstressed, in a poem or play is called a meter. This is used to emphasize words and expressions through vocal projection that can portray the nature of the play
The answer is D vertebrates <span />
Since an antonym is an opposite, like a synonym is a similar word, the opposite of aggressive would be meek.