Answer:
The correct answer is: D) Facts can be scientifically tested.
Explanation:
An opinion is, by definition, <u>a judgment about something that is not based on facts</u> (for example, if you prefer a certain music genre, that is an opinion). Therefore it cannot be scientifically tested. Option A is false.
Scientific theories are <u>observations based on data</u> that are supported by the scientific community and the general public, but most of the time those theories cannot be fully proved yet, so many years or centuries later, those theories can be debunked thanks to new theories and discoveries. Option B is false.
There are <u>many things that scientists do not know because there is a limit to the research that can be done with our current technology</u>, and there are many things that do not have a scientific explanation yet. So no, scientists haven't learned all they'll ever know about science. Option C is false.
Facts CAN be scientifically tested because they are proven to be true.
