Diagrams are demonstrated as the illustrative portrayal of the information that would assist the readers to visualize the information by affiliating it to images. The diagrams are represented in numerous manners like a line graph, flow chart, pie-chart, function graph, scatter plot, exploded view, and many more depending on the type of information that needs to be illustrated.
As per the question, the given assertion would be considered false as it is not always necessary to include a simple drawing with labels. The diagrams like a train-schedule diagram or scatter plot are complex enough to be understood carefully and diagrams like population density diagram or function graph do not include labeling instead the different colors represent the density(in population density diagram) and a curved line(in function graph) represents information. Thus, the given assertion is <u>false.</u>
The sentence in which the underlined infinitive phrase functions as a subject is the last one - to quickly move large groups of people is the purpose of public transportation. <em>To quickly move </em>is the infinitive phrase, and it is a subject.
