The correct option is A.
In the excerpt given above, the infinitive phrase 'to be secured' modifies the right of the people. In English language, a word or phrase is said to modify another word if that word or phrase offers more explanation and clarification about the word that is been talked about. In the passage given above, the modifier [to be secure] offers more explanation about the rights of the people that are been discussed in the passage.
Persuade.
EXPLANATION
Rhetorical speech is an act of persuasive speaking which employs various methods to convince, influence, or please an audience.
Ummmmm... you didn't attach anything, there's nothing to answer
