observing an event as it occurs discussing results with other experts publishing the results on a webpage collecting data in an experiment
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which of these is unique to the process of scientific investigation?
Possibilities:
- observing an event as it occurs
- discussing results with other experts
- publishing the results on a webpage
- collecting data in an experiment

collecting data in an experiment