A hypothesis must be

a. able to be proved beyond a doubt
b. able to be proved beyond a reasonable doubt
c. either accepted or rejected
d. correct or incorrect
e. none of the above

C comes closest. A hypothesis is a proposal to explain observations. Further observations are made and the hypothesis is tested against them. If the hypothesis stands up to observation and experiment, it is accepted. If an observation or an experiment show it to be wrong, it must be rejected or altered. A hypothesis is accepted as long as it is not falsified.

While a hypothesis can be incorrect (in which case it is rejected) it can only be correct at a particular time as the next observation might falsify it.

E. None of the above
A hypothesis is a guess on what will happen on the experiment.

e