The author uses the parenthetical clause in the passage to assert that hope is important regardless of whether it comes to fruition.
<h3>What is a
parenthetical clause?</h3>
A parenthetical is a short sentence that is not essential to the rest of the sentence but does not mean that it is not important to the sentence.
The clause of parenthetical are separated from the rest of a sentence but adds an extra information without changing the meaning of a sentence.
However, the clause"though hope should always be deluded" was used primarily to assert that hope is important.
Therefore, the Option B is correct.
Missing options <em>"A. convince the audience that the pursuit of happiness is futile B. assert that hope is important regardless of whether it comes to fruition C. discourage the audience from indulging in unreasonable expectations D. highlight the positive and negative aspects of hope E. imply that the value of hope depends on its close connection with delusion</em>
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<em>brainly.com/question/1260394</em>
By explaining problems and giving solutions! this is the best fit because the other two might make sense at a first glance, but only explaining problems and solutions would be an effective way to teach people how to set up an aquarium by giving them examples of what to do and what not to do whereas the others are just him talking about his aquarium.