Final answer:
Students most frequently encounter argumentative text when reading online product reviews, as they often include persuasive language and evidence meant to influence the reader's opinion.
Step-by-step explanation:
Students are most likely to encounter argumentative text in option D) reading reviews for products online. This is because online reviews are a common means by which individuals express their opinions and attempt to persuade others. In reviews, people argue for or against the quality and usefulness of a product, often using persuasive language, supporting evidence, and sharing personal experiences to bolster their arguments. This kind of real-life argumentation highlights the rhetoric and critical thinking skills people employ when they present a perspective or viewpoint with the intention of influence or persuasion.