How Often Do Sunlike Stars (Of a Type Considered Likely

question 63

Multiple Choice

How often do Sunlike stars (of a type considered likely to be circled by an inhabitable planet) form in the Milky Way Galaxy,on average?

• A) Hundreds of such stars form per year.
• B) About one such star forms per year.
• C) We cannot yet answer this question.
• D) Less than one such star forms per thousand years.

---

Definitions:

Pain

An unpleasant sensory and emotional experience associated with actual or potential tissue damage.

Escape

A type of behavior where an individual learns to perform an action to terminate an ongoing, unpleasant stimulus or situation.

Punisher

A stimulus that reduces the likelihood of the behavior that it follows.

Avoidance Response

A behavioral response that prevents an aversive event.