Which of the following is NOT a type of context clue?

The selection of "C. Dictionaries" as the option that is not a type of context clue is accurate because context clues refer to hints or cues within the text that help readers discern the meaning of unfamiliar words. These clues are intrinsic to the text itself, such as examples, antonyms, or definitions provided nearby.

When encountering a new word, readers often rely on context clues found within the same sentence or surrounding sentences, which might illustrate the meaning through examples, contrast it with antonyms, or provide direct definitions. In contrast, dictionaries are external resources that provide meanings and information about words, but they do not function as clues within the text. Therefore, while dictionaries are valuable tools for understanding language, they do not fit the definition of context clues that come from the immediate context of a passage.