A graphics package is software designed for creating, editing, or presenting images, drawings, and visual designs. Corel Draw is a vector-drawing program, Harvard Graphics is a presentation and charting package, and Freelance is a presentation graphics program, so all three deal directly with visual content.
Quattro Pro, by contrast, is a spreadsheet application used for entering numbers, building formulas, and performing calculations, in the same category as programs like Excel or Lotus 1-2-3. Its core purpose is numerical data processing, not the creation or manipulation of graphics, which is why it does not belong with the other three programs.
When identifying software categories, focus on the program's primary function: a package built around numbers and formulas is a spreadsheet tool, while one built around drawing, layout, or visual presentation is a graphics tool.