Final answer:
The first sentence of the second paragraph includes parenthetical elements and parallel structure. Parenthetical elements are supplementary parts of a sentence, and parallel structure is used to balance ideas by presenting them in a repeating pattern.
Step-by-step explanation:
Two rhetorical techniques present in the first sentence of the second paragraph are parenthetical elements and parallel structure. Parenthetical elements are parts of a sentence that are not essential to its main meaning and often enclosed in parentheses, dashes, or commas. A parallel structure, or parallelism, involves using the same pattern of words to show that two or more ideas have the same level of importance. Parallelism enhances the readability and appeal of a text and is often used in prose and speeches for emphasis. For example, in US President John F. Kennedy's inaugural address, parallel structure is used effectively to convey his message about collaborative work for liberty. Additionally, repetition is another technique that involves repeating words or phrases to emphasize a point or theme, such as in Martin Luther King Jr.'s 'I Have a Dream' speech.