The hottest main-sequence stars are also the most massive.

Name: The hottest main-sequence stars are also the most massive.
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This statement is true according to the Hertzsprung-Russell diagram, which shows that hot and bright stars are positioned at the upper left end of the diagram, indicating that they are both massive and young, while cool and dim stars are positioned at the lower right end, indicating that they are both less massive and older.

The Hottest Main-Sequence Stars Are Also the Most Massive