What challenge is highlighted by the passage featuring a hard, stubborn old man?

The correct answer emphasizes the challenge posed by the multiple meanings of high-frequency English words, especially when interpreting the character of a hard, stubborn old man. In the context of the passage, understanding the nuances of language often relies on the specific meanings that words can convey based on context. High-frequency words can have varying interpretations that affect comprehension, particularly in literature where character traits and motivations must be inferred from subtle descriptions and dialogue. This ambiguity can create challenges for English language learners who may struggle with deciphering which meaning is relevant in a given context, thus impacting their understanding of the text and the character's depiction.

High-frequency words are encountered frequently in conversation and writing, and their ability to shift meanings can lead to confusion if a learner does not grasp these variations. The mastery of these words is crucial for building reading comprehension, as it allows learners to better understand the themes and messages conveyed by the author through characters like the old man mentioned in the passage.