Option B sets a Kairos by specifying a deadline by which adjustments must be done in order to take effect, which is the phrase that best describes how the extract makes the speakers' claims seem persuasive.
What is persuasive statement?
A persuasive statement is one that the speaker makes in an effort to persuade or influence the audience or others to agree with what they have to say. It is intended to convince listeners to change their minds and believe what the speaker is saying.
Therefore, option B is the statement that best explains how the extract makes the speakers' claims seem convincing since it establishes a deadline for adjustments to be made in order to be successful.
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