B. A timeline
A timeline is the best graphic to show the order of events in the history of vaccine development, as it visually represents the sequence of events over time.
A.
A photograph
B.
A timeline
C.
A map
D.
A chart or graph
1 answer
B. A timeline
A timeline is the best graphic to show the order of events in the history of vaccine development, as it visually represents the sequence of events over time.