What is a common characteristic of a successful speech's structure?

a. use of figurative language
b. establishing speaker credibility
c. repetition of key ideas or phrases
d. use of questions

what does the teacher mean

the sun warms our planet, and with the moon, creates the tides. the moon orbits the earth and in turn, the earth orbits the sun. because they appear to be the same size in the sky, the sun, earth and moon work together to create eclipses. when the moon is directly in between the earth and sun

i believe the answer is perspective