Final answer:
Julia is using a serif font, characterized by the small lines or tails at the end of strokes, known as serifs, which often appear denser when printed.
Step-by-step explanation:
Based on the description provided, it seems that Julia is using a serif font for her project. Serif fonts are characterized by the small lines or tails attached to the end of strokes in letters, which are known as serifs. These fonts often have a more classical or traditional appearance, which can be perceived as more dense when printed, especially if the font is of a bold typeface. Therefore, a font with a dense appearance when printed is a serif font, possibly with a bold typeface.
Examples of such serif fonts include Times New Roman and Garamond. It's important to note that sans-serif fonts like Helvetica are recognized for their clean, modern look and lack of serifs. They typically appear less dense than their serif counterparts due to the absence of additional strokes at the ends of the letterforms.