This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Biostatistics, Subject name: Social & Preventive Medicine
Which of the following shows progresion of events against time - 
Select and explain. 
A. Barchart, B. Pie chart, C. Histogram, D. Line diagram
D: Line diagram
Answer: D: Line diagram 
Explanation: Ans. is 'd' i.e., Line diagram* Line diagram (Line graph) is used to show the trend of events with passage of time.