C). Present details about her work in a 12- to 15-minute speech.
Explanation:
As per the question, option C i.e. 'Present details about her work in a 12- to 15-minute speech' demonstrate the advice that may not be helpful for Suhana to follow for her poster session. <u>Since she has been selected for presenting the results of her anatomy project in the State Science Fair, she must focus on presenting the key objectives/achievements or results of the project in a precise, visual, and compact manner enthusiastically and effectively to grab the viewer's attention and interest</u>. A 12-15 minutes speech would be too lengthy and boring for the audience and ruin the efficacy of the session. Therefore, the poster-session needs to be brief, graphic, and impactful. Thus, <u>option C</u> is the correct answer.