Generally Speaking, How Does the Surface Temperature and Luminosity of a Protostar

question 5

Multiple Choice

Generally speaking, how does the surface temperature and luminosity of a protostar compare to the surface temperature and luminosity of the main-sequence star it becomes?

• A) A main-sequence star is hotter and dimmer than it was as a protostar.
• B) A main-sequence star is hotter and brighter than it was as a protostar.
• C) A main-sequence star is cooler and dimmer than it was as a protostar.
• D) A main-sequence star is cooler and brighter than it was as a protostar.

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Definitions:

Population

The entire group of individuals or instances about which scientists are interested.

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A gauge of the probability that a particular event will take place.

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A term used in statistics to describe two or more events that have no influence on each other's likelihood of occurring.