Identify correct statement from the following 1)A hypothesis is a possible that can be tested.
2) Variables are the factors that can affect the outcome of investigation.
3) Always hypothesis will be true
4) If hypothesis is incorrect test can be done with other variables

The answer is statement 1, 2, and 3

Explanation:

A hypothesis is a starting point for further investigation, therefore a hypothesis will always be a possibility at least until it is tested.

Variable is a factor that is liable to vary or change.

A hypothesis without being tested is merely a statement or an explanation made on the basis of limited evidence. Therefore it is unsure whether the said statement is true or not.

A hypothesis can still be proven by further investigation with different variables

blue stars have the highest surface temp

stellar distances are usually expressed in light-years

the measure of a star's brightness is called magnitude

hope this !

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link: