Which Gestalt principle states that objects that are physically enclosed together are seen as belonging to the same group?

The following heat map shows the average monthly distance traveled (in billions of miles) by vehicles on urban highways for five different years. Urban Highways – Average Monthly Distance Traveled by Vehicles (Billion Miles) Years Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year 1 4.22 5.32 5.12 5.12 4.92 4.49 4.55 4.49 4.44 4.39 4.37 4.35 Year 2 4.31 5.44 5.24 5.24 4.98 4.59 4.68 4.65 4.61 4.68 4.74 4.79 Year 3 4.38 5.51 5.36 5.36 4.98 4.63 4.71 4.78 4.82 4.88 4.85 4.89 Year 4 4.45 5.59 5.41 5.41 5.01 4.72 4.78 4.79 4.82 4.92 5.06 5.11 Year 5 4.51 5.65 5.49 5.49 5.12 4.8 4.88 4.82 4.95 5.12 5.22 5.44                   Which months tend to have the highest average monthly distance traveled, regardless of the year?

Which of these charts minimizes eye travel?   Chart A   Chart B

In which year did South Sales surpass North Sales?  

A radar chart displays multiple quantitative variables on a polar grid with an axis for each variable and should be avoided. Which of these is an appropriate alternative to a radar chart?

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The following line chart would be more appropriate than the bar chart if __________.  

Preattentive attributes are those features that can be processed by __________.

Decluttering can be achieved by all of the following EXCEPT:

Once a bubble chart has been created in Excel, you can edit which variables correspond to the various dimensions (horizontal, vertical, or bubble size) by first ___________.