A slideshow or a video would be the most suitable format for Erika to present her research on author Zeta Elliot while using images and limited text. These formats provide the opportunity to incorporate visuals and graphics to support her research findings, while also allowing her to present information in a concise and visually engaging manner. A podcast may not be the best option as it primarily relies on audio content rather than images and limited text. Similarly, an essay format may not be ideal for showcasing images effectively.
