Question

text excerpt
\it was one hundred and forty - four years ago that members of the democratic party first met in convention to select a presidential candidate.\
\i, barbara jordan, am a keynote speaker.\
\...one additional bit of evidence that the american dream need not forever be deferred.\
sound element
dramatic pause
tone and emphasis
applause
effect on understanding
the pauses after \ago\ and \first\ emphasize how long ago the first convention was. they also suggest that the convention is important and historic.
(the two empty rectangular boxes in the effect on understanding column for tone and emphasis and applause are omitted as they are just placeholders for writing content.)

Explanation:

1. For the line "I, Barbara Jordan, am a keynote speaker." with the sound element "Tone and Emphasis": A deliberate, confident tone and emphasis on the speaker's name and role establishes her authority, draws the audience's focus to her unique position as a notable keynote speaker, and reinforces her credibility from the start.
2. For the line "...one additional bit of evidence that the American Dream need not forever be deferred." with the sound element "Applause": The applause reflects the audience's emotional resonance and agreement with the hopeful, unifying message about the American Dream. It amplifies the impact of the statement, highlighting its significance and the shared values of the listeners.

Answer:

1. Tone and Emphasis: Establishes speaker credibility and authority, draws audience focus to her distinct role as a keynote speaker.
2. Applause: Signals audience agreement and emotional connection to the hopeful message about the American Dream, amplifying the statement's impact.