if you have read the books you would know that once the men drink from the lotus flower it makes them drunk and unable to coherently speak and defend themselves while Odysseus was seduced by the mortal goddess for 7 years before he got tired and wanted to return home to his wife and son.
The answer is C. A visual aid is supposed to assist in the understanding of a text, whether it is oral or written. If the user relies too much on the image, he or she might not fully understand the text, or miss an important part of the message.