Jorge is testing the effect of lead on child development. based on his observations, he finds that the longer the children are exposed to lead-based paint, the higher the chance becomes that the children may develop behavioral problems. he has done repeated experiments, and his results are similar to the results of many other scientists.

why is this scenario considered a theory rather than a hypothesis?

it is a testable scenario.
it is based on prior knowledge.
it is a well-tested explanation.
it is a factual statement.