Answer: Option (a) and (b) are the correct answers.
Step-by-step explanation:
A scientific theory is defined as a well explained aspect of a real or natural world that is based of facts. These facts can be are repeatedly confirmed by observations and experiments.
Hence, a scientific will be always true as it will give the same result every time it is repeated.
For example, quantum theory is a scientific theory.
Therefore, we can conclude that a scientific theory is:
- is supported by evidence.