b: the vinegar solution was hypotonic , causing the egg to lose mass
c: the vinegar solution was hypertonic , causing the egg to gain mass
d: the vinegar solution was isotonic to the egg so the mass remained constant
a) is the right answer
light
touch
sound
Cells in the human eye send nerve impulses to the brain that causes the pupil to constrict. This is an example of a reaction to the light stimuli. Thus, the correct option is B.
Pupils are the part of eye which respond to three distinct kinds of stimuli which include their constriction in response to brightness of light, this is called as the pupil light response, constrict in response to near fixation which is known as the pupil near response, and dilate in response to increases in the arousal and mental efforts, either these are triggered by an external stimulus or occur spontaneously.
Light is the stimulus and the impulses in response to this reach the brain through the optic nerve and the response due to this is conveyed to the pupillary musculature through autonomic nerves which supply the eye.
Therefore, the correct option is B.
Learn more about Pupil reaction here:
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