Answer :

hypothesis is the answer, because it is a possible explanation to a problem or question that you can test by using an experiment.
PBCHEM

Answer : Hypothesis - When a new concept that is tested in a scientific investigation is used it is called as hypothesis.


Explanation : Hypothesis is defined as supposition or proposed explanation made on the basis of limited evidence, which acts as a starting point for any further investigation on a particular topic.


When a scientific investigation is conducted there is a quest to find the best possible answer to a question, using a scientific method.


In turn, the scientific method is defined as a systematic process in which it involves using measurable observations to formulate, test or modify a hypothesis.