Answer:
the second one, is the most reasonable one.
definitely not the last one.
Answer:
Example of the Scientific Method
1. Observation: My toaster doesn't work.
2. Question: Is something wrong with my electrical outlet?
3. Hypothesis: If something is wrong with the outlet, my coffeemaker also won't work when plugged into it.
4. Experiment: I plug my coffeemaker into the outlet.
5. Result: My coffeemaker works!
The process is called facilitated transport when molecules must join with another molecule, such as proteins, to get through a membrane.