an observation a prediction a conclusion a theory a hypothesis
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Sally placed electrodes into a beaker containing a solution and connected the electrodes to a batter. Part of Sally's report stated "Bubbles were given off at one of the electrodes." The statement is
Possibilities:
- an observation
- a prediction
- a conclusion
- a theory
- a hypothesis

an observation