Answer: The correct answer is B.
Step-by-step explanation: According to the APA, American Psychological association, a systematic observation is an organized, objective method of obtaining reliable data unbiased by observer interpretation.
In this case, the only option that represent systematic observation is option b, because the observer is not directly involved in collecting the information. An instrument is handed to the participant (Poll) and he/she answers it without being influenced by the observer (You).
In conclusion, the correct answer is B.