C: bar graph
bar graphs are used to track changes over time, so I would say that C is your best bet
Text boxes and related tools
To keep the medical records confidential otherwise, hackers would take advantage of them and sell them to the highest bidder
Answer:
The answer is Lines.
Explanation:
A visible line, or object line is a thick continuous line, used to outline the visible edges or contours of an object. A hidden line, also known as a hidden object line is a medium weight line, made of short dashes about 1/8” long with 1/16”gaps, to show edges, surfaces and corners which cannot be seen.