Answer:
B. Hypothesis
Step-by-step explanation:
Hypothesis is an explanation about a phenomenon that is proposed. This explanation is further subject to a test to make a scientific hypothesis.
scientific hypotheses is usually based on previous observations that is not satisfactorily explained with available scientific theories but need further clarifications.
After an hypothesis is formulates it is then subjected to test to ascertain if the hypothesis will be accepted or rejected. When rejected further investigation can be carried out to be sure of the outcome.