Read the excerpt from paragraph 3. Our Constitution is a remarkable, beautiful gift. But it's really just a piece of parchment. It has no power on its own. We, the people, give it power – with our participation, and the choices we make. Whether or not we stand up for our freedoms. Whether or not we respect and enforce the rule of law. America is no fragile thing. But the gains of our long journey to freedom are not assured.

How does Obama create cohesion in this paragraph?

A.
He links important, contrasting ideas with the transition word "but."
B.
He incorporates transitions like "whether or not" that show certainty.
C.
He uses the words "we" and "our" to show connections in the audience.
D.
He speaks in short fragments to create an interesting rhythm.

repetition is used to emphasize a feeling or idea, create rhythm, and/or develop a sense of urgency.

the present continuous is a verb tense which is mainly used to indicates that an action is in progress at the moment of speaking.  

it is formed using: person + verb to be (am/is/are) +verb + - ing form  

example: i am studying at this moment .

in addition, the present continuous is also used in order to express things that will or will not happen in the near future.

example: i am having dinner with some friends tonight.

the speaker sometimes   uses it   to express that an action is repeated and it causes irritation on the part of the speaker

example: my sister is constantly complaining about everything.

misty passage from the question

the answer is c. hope this