Final answer:
It is true that there is currently no scientific evidence to determine what existed before the Big Bang.
Step-by-step explanation:
It is true that it is difficult to determine scientifically what existed before the Big Bang because there is no evidence available. The Big Bang theory is based on the observation of the expansion of the universe and the cosmic microwave background radiation. Any events or conditions prior to the Big Bang are currently beyond the reach of our scientific instruments and methods.
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