Which of the following is a consequence of manually changing the height of table rows?

Manually changing the height of table rows can lead to the consequence of the table becoming less organized. When the row heights are altered individually, it can create inconsistencies in the table's appearance, making it visually unbalanced or chaotic. This lack of uniformity can distract from the information being presented and can make it harder for readers to follow the content, especially if some rows are significantly taller or shorter than others. Maintaining a consistent style is often important for clarity and professionalism in document presentation, which can be jeopardized by irregular row heights.

In contrast, the other options present scenarios that do not accurately reflect the implications of adjusting row heights. Adjusting the row height would not typically affect the layout of the entire document, nor would it result in only some text appearing. Additionally, tables can indeed have varying row heights, which is a feature that can enhance their functionality rather than hinder it.