The most important quality of a speech is the speaker:

(a)knowing the subject
(b)speaking in a monotone
(c)using vivid language and figures of speech
(d)using meaningful gestures
(e)learning on the podium
(f)using a pleasant, expressive voice
(g)speaking at a pleasing pace

(A) Knowing the subject.

Explanation:

For any type of speaking, be it publicly or just a simple speech for a group, the most important and first priority should be the familiarity of the topic by the author.

An orator or speaker may have a good speaking voice, have great body language, great presentation skills, stage performance and even uses figurative languages. But all these can amount to nothing if the topic is not fully grasped and understood by him. The most important character of the speech will depend on the knowledge of the speaker about the topic.

explanation:

it's important for any number of settings.   but then i'm a retired teacher and my view may be biased.

it certainly will not weigh as a minus when applying to a college, while poor grades always work against you.

other factors are important like what you do to improve the community.  

i think one answer could be this poet uses no rhyme.