C. the claim regarding whether the strategies used are effective
Explanation:
An introduction must present a brief summary of what the text will discuss, that is, the introduction must present the content of the text to the reader. Although the introduction above presented the main object of the rhetorical analysis essay, it made no mention of the conclusions that this text presented, that is, the introduction showed the strategies used by teachers to improve their career plans, but it did not show which these strategies were effective.
