Answer:
City Hall is <u>where the parade begins.</u>
'Exert' means to apply force on influence over something else, this can be in a negative or positive way. In this quotation, it means that language, if used correctly, has the ability to express a 'hidden power'. It's also worth mentioning that the simile is relevant as the moon has an influence on the level of tides on Earth.
The author uses the THIRD PERSON point of view in the excerpt.
Third person point of view uses pronouns like he, she, they, it.
In the excerpt, "she", "they" and "their" are used. These proves the usage of third person point of view.