Final answer:
A hypothesis that cannot be tested experimentally is one that cannot be proven or disproven through scientific experimentation. An example of such a hypothesis is the statement '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 one that cannot be proven or disproven through scientific experimentation.
It involves statements or claims that cannot be observed or measured directly.
One example of such a hypothesis is the statement 'The structure of any part of the broccoli is similar to the whole structure of the broccoli.'
This hypothesis cannot be tested experimentally because it cannot be directly observed or measured.