Answer:
It is acceptable because data are still being collected.
Step-by-step explanation:
Protists are very complex organisms, and this kingdom is made up of a great diversity of animals and many of them do not have the same characteristics, making it even more difficult for scientists to make a concrete conclusion about this kingdom. At all times more and more hypotheses about the protists are formulated and tested, this change of hypotheses is always acceptable because the data about the protists is still being collected.