The Sketch Above Shows Groups of Stars on the H-

question 42

Multiple Choice

The sketch above shows groups of stars on the H- R diagram, labeled (a) through (e) ; note that (a) represents the entire main sequence while (c) and (d) represent only small parts of the main sequence. Which group represents stars with the longest main- sequence lifetimes?

• A)a
• B)b
• C)c
• D)d
• E)e