Answer: D. Must be a general statement.
A proposed explanation, formulated on the grounds of limited evidence with the aim of further investigation is known as a hypothesis. For a hypothesis to be good enough to be adopted, it must possess some distinct characteristics.
Of the options listed, a hypothesis should never be a general statement as a good hypothesis is only formulated for a specific problem and does not include generalization. A hypothesis depicting generalization cannot be used to get correct conclusions.