What is the expected result of effectively using the strategy over time for Zach?

The expected result of effectively using the strategy over time for Zach is enhanced comprehension and vocabulary skills. When a student consistently engages with a focused reading strategy, it fosters a deeper understanding of texts. This process allows Zach to make connections between words and their meanings, thereby expanding his vocabulary through exposure to varied contexts and usages. Improved comprehension skills enable him not only to grasp the immediate content of what he's reading but also to synthesize information across different texts, contributing to a greater overall literacy development.

In contrast, the other options suggest negative outcomes that would not typically arise from effective strategy use. For instance, greater confusion with academic language would indicate a lack of progress, while increased dependence on guidance might prevent Zach from becoming a more autonomous learner. Less interest in learning would reflect disengagement, which contradicts the purpose of instructional strategies designed to cultivate a love for reading and continuous discovery. Therefore, enhancing comprehension and vocabulary skills is the most beneficial and relevant outcome of effective strategy implementation.