Define "Tier 2" vocabulary.

The definition of "Tier 2" vocabulary appropriately refers to high-utility words that are commonly used across various contexts. These words are critical for students' academic success because they are not found exclusively in one subject area but are relevant across multiple disciplines and everyday conversations. Learning Tier 2 words enhances comprehension and the ability to articulate thoughts clearly, enabling students to grasp more complex texts and ideas.

In contrast, the other options describe vocabulary types that serve different purposes: specific academic terminology (Tier 3), general everyday language (Tier 1), or rare literary terms. However, Tier 2 words stand out due to their broad applicability and relevance in both academic and social settings, which is what makes them essential for students to learn.