The answer is C.
http://www.cnn.com/2010/CRIME/06/09/williams.dna.test/
The required graph for a single variable is a linear graph or time series graph
<h3>Single variable graph</h3>
A single variable graph is a graph having an input and one output.
For instance, the equation of a line y = mx + b is a single variable graph.
Hence the type of data for a single variable graph will give a linear function. Therefore the required graph for a single variable is a linear graph or time series graph
Learn more on single variable graph here: brainly.com/question/14521625
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10000 I believe that is the answer