please check my answer again thanks

Pupillary constiction in the presence of bright light is an example of what reponse ?

A active tropic
B passive tropic
C unconditioned
D conditioned

I now say it's C

Yes.

"In humans and many animals (but few fish), the size of the pupil is controlled by involuntary constriction and dilation of the iris in order to regulate the intensity of light entering the eye."
http://en.wikipedia.org/wiki/Pupil

Actually, the correct answer is A) active tropic.

Pupillary constriction in the presence of bright light is considered an active tropic response because it involves a deliberate action by the body to constrict the pupils in order to protect the eyes from excessive light.

To confirm whether your answer of C is correct or not, let's go through the different options and explain how to arrive at the correct answer.

A) Active tropic: Active tropic responses are voluntary movements or behaviors displayed by an organism. Pupillary constriction in response to bright light is not a voluntary action, so this option is unlikely to be the correct answer.

B) Passive tropic: Passive tropic responses refer to automatic or involuntary movements or behaviors exhibited by an organism. Pupillary constriction in response to bright light does occur automatically without conscious effort, which aligns with a passive tropic response. However, this option does not accurately describe the specific mechanism involved in the pupillary constriction response.

C) Unconditioned: Unconditioned responses, also known as reflexes, are natural and innate responses to certain stimuli. Pupillary constriction in response to bright light is indeed an unconditioned response. This means that it is a natural reflex and does not require prior learning or conditioning. Therefore, your choice of C is a plausible option.

D) Conditioned: Conditioned responses are learned behaviors or reflexes that occur as a result of conditioning or training. Pupillary constriction in response to bright light is not a learned behavior, but rather a natural and automatic reflex. Therefore, option D is not the correct answer.

Based on the explanations above, it is likely that your choice of C - unconditioned response - is correct. However, if you have any doubts or would like further clarification, please let me know.