Answer:
-line graph
Step-by-step explanation:
We are going to take the definition of all the terms and then deduced our correct answer.
Pictograph : Pictograph also known as pictogram uses picture to represent data.
Pie graph: It is a chat that uses pie slices to represent relative size of data.
Line graph: A line graph is a graph with points connected by lines to show changes in value over time.
Bar graph: A bar graph uses rectangular box known as bars to represent data, it is relatively used to show size
Double bar graph : A double bar graph uses two bars beside each other two represent data. It can be used to compare two data groups.
From the above definition, we can deduced that the word that shows data over time is the line graph