Which of the Following Limits the Number of Technological Civilizations

question 16

Multiple Choice

Which of the following limits the number of technological civilizations in our galaxy?

• A) the lifetime of M dwarf stars
• B) the number of satellite galaxies of the Milky Way
• C) the fraction of civilizations that wish to communicate with others
• D) the number of planets per star in a habitable zone for longer than a few billion years

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Definitions:

Mental Processes

The internal, covert activities of the mind, such as thinking, feeling, and reasoning, that are not directly observable.

Psychology

The systematic examination of mental processes and actions, covering both the observable and the hidden aspects of consciousness and thinking.

Causation

The relationship between cause and effect, where one event (the cause) directly leads to the occurrence of another event (the effect).

Behaviour

The actions or reactions of an organism, often in response to its environment.