Final answer:
The dot matrix chart represents voting pattern analysis as it visually displays the distribution and density of votes cast for a particular issue across a city.
Step-by-step explanation:
The dot matrix chart representation in question is a visual representation of voting data, specifically highlighting votes against a particular ballot issue. Given that each dot represents several votes, and the distribution of these dots illustrates the spread of votes throughout a region, the most appropriate answer to what the chart represents is B) Voting pattern analysis. This type of chart helps to visualize how different areas have voted, potentially indicating regions of support or opposition to the issue presented.
While the chart could ostensibly give some insight into population distribution due to the white areas indicating fewer voters, it is primarily used to analyze voting results rather than to offer precise population metrics. It does not predict election outcomes or present opinion poll data; it is retrospective and descriptive of actual votes cast.