Final answer:
A hypothesis that cannot be tested experimentally is considered non-falsifiable. An example of a non-falsifiable hypothesis is: 'The structure of any part of the broccoli is similar to the whole structure of the broccoli.'
Step-by-step explanation:
A hypothesis that cannot be tested experimentally is considered non-falsifiable. One example of such a hypothesis is:
The structure of any part of the broccoli is similar to the whole structure of the broccoli.
This hypothesis is not testable because it is difficult to define what is meant by 'similar' in this context. Additionally, the structure of a part may not reflect the structure of the whole in all cases, making it impossible to conduct an experiment to prove or disprove this hypothesis.