The line type of organizational chart shows:

The correct answer indicates that the line type of organizational chart illustrates a direct flow of authority from top to bottom. This type of chart is designed to clearly depict the hierarchy within an organization, showing who reports to whom in a straightforward manner. Each box on the chart represents a position within the organization, and the lines connecting these boxes indicate the lines of authority and responsibility.

This structure is particularly effective for clarifying the chain of command, making it easier for employees to understand their role in relation to other positions. In a line organizational chart, the top management is positioned at the top, and as one moves down the chart, the positions illustrate a clear descending order of authority.

The other options describe different organizational dynamics that do not align with the characteristics of a line organizational chart. For instance, an authority flow from side to side suggests a horizontal or flat organizational structure, which contrasts with the hierarchical representation of authority flow indicated by the line type chart. Advisory positions refer to roles that provide guidance and recommendations rather than direct authority, while informal relationships pertain to networks that develop outside of formal structure, which are not depicted in a line organizational chart.