Answer:
Hasty generalization.
Explanation:
Hasty generalization as the title is the logical fallacy that emphasizes drawing a conclusion with insufficient pieces of evidence (hastily). It exemplifies the faulty or false generalization as it offers a claim without sufficient reasonable or logical support and that is the reason could not be justified as it straight away jumps to the conclusion without knowing the background. Similar to the description, this fallacy is displayed quite evidently in the given paragraph, as the child jumps to the conclusion that there have been budget cuts recently so there must have been some problem or threat to the teacher's job without even knowing the situation or analyzing it. Thus, this makes us conclude the fallacy displayed by the child as "hasty generalization."