In statistics, presentation of data can be categorized into tabular, textual, diagrammatic, and graphical forms. There is a precise distinction between diagrams and graphs:
- **Graphs** (like histograms, frequency polygons, frequency curves, and line graphs for time series) are specifically designed to represent continuous variables, frequency distributions, and time series data where the continuity and trend of the data points are crucial.
- **Diagrams** (such as bar charts, pie charts, etc.) are primarily used to represent discrete categories, attributes, or simple comparisons between distinct groups. They are not suited to depict the complex distribution patterns of continuous frequency data or the chronological continuity of time series.
Therefore, for representing frequency distributions and time series, **diagrammatic presentation** is rarely used, while graphical presentation is the standard. This matches Option A.
Hence, **Option A** is the correct answer.