Megabuild is a large construction company. They have over 600 employees on their construction team, each specializing in one of the following: bricklaying, plumbing, electrics, or structural. Megabuild has never been very good with data, but they have recently hired an intern, Matty, who is handy with spreadsheets. They ask Matty to process their data and produce visualizations analyzing how many hours of each specialization are contracted. He sets about producing some charts.

Matty first wants to compare the average monthly hours for four specializations, so he tries four different charts. Which of the following is the best choice?

Matty then thinks seeing how the hours change over time would be helpful. Again, he tries four different charts. Which of the following is the best choice?

Matty now wants to show the breakdown of the total company hours by specialization for the past eight quarters. Again, he tries four different charts. Which of the following is the best choice?