Final answer:
The recommended strategy that students should not use as they read nonfiction is option 3: ignoring unfamiliar words.
Step-by-step explanation:
The recommended strategy that students should not use as they read nonfiction is option 3: ignoring unfamiliar words. When reading nonfiction, it is important to understand the meaning of unfamiliar words as they can affect the overall comprehension of the text. Ignoring unfamiliar words can lead to confusion and a lack of understanding of the content.