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CRS Question, 5–32
ANSWER
Choice 3 accurately reflects the connection between molecular velocity and an increase in temperature.  Figure 5.21 on page 206 visually shows the relationship.  Kelvin temperature is directly related to molecular velocity - with greater temperature the distribution of available velocities also increases.
Section 5.6: The Kinetic Molecular Theory of Gases
HMClass Prep:  figure 5.21