Final answer:
The most effective visual cue for highlighting quarterly sales data is typically a red or green font color, depending on cultural context and the message you want to convey, with green usually representing positive growth.
Step-by-step explanation:
When looking at how to present and highlight quarterly sales data visually, certain cell styles in a spreadsheet or chart can be more effective than others. Given the choices, using a red font color might serve as a strong visual cue, drawing attention to significant figures such as increased sales or warning signs such as declines. However, it's crucial to consider the cultural context as in some cultures, red might have negative connotations. Conversely, a green font color is typically associated with growth and success, which could be ideal for representing positive sales performance. Bold and italic font styles might also work if you need to emphasize certain figures, but color generally conveys the message more immediately. Underlined font style can be less impactful for grabbing attention compared to color but can be used to denote links or footnotes if relevant.