This is false.
It is false because a scientific method is a lot more complex and has many steps which need to be fulfilled for it to be valid. Rationality and common sense are not enough for something to be scientific as sometimes something can be irrational or almost nonsensical and yet scientific.
Therefore implies that something is occurring as a result of something else. As a result, therefore best implies a cause and effect structure.
Answer:7. Simple 8. Compound 9. Simple 10. Simple 11 compound 12 simple 13 compound 14 simple 15 simple
Explanation: