Which Type of Star Spends the Shortest Time as a Main

question 67

Multiple Choice

Which type of star spends the shortest time as a main sequence star?

• A) O star
• B) M star
• C) B star
• D) G star

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Definitions:

Blinking

The rapid closing and opening of the eyelid, a reflex action to protect the eye from irritants and help spread tears over the surface.

CR

A term that could refer to several concepts depending on the context, such as Conditioned Response in behavioral psychology, indicating a learned response to a previously neutral stimulus.

Salivating

The production and release of saliva in the mouth, often in response to the anticipation of food, through a reflex action.

Conditioned Stimulus

A previously neutral stimulus that, after becoming associated with an unconditioned stimulus, eventually triggers a conditioned response.