A testable hypothesis is one that can be measured or evaluated through experimentation or observation.
Among the options provided, the following statements can be considered:
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If certain foods are healthy for you, then they should also taste good. - This is subjective and difficult to measure scientifically.
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If acid is added to a solution, then the pH of the solution will go down. - This can be tested and measured, making it a testable hypothesis.
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Dropping a ball from a height of 10 m will cause it to bounce back up 5 m. - This is testable, as you can measure the height to which the ball bounces.
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Plants produce glucose as the end product of photosynthesis. - This is a factual statement based on scientific knowledge, but it's not framed as a hypothesis that can be tested.
Among the options, the most clearly testable hypothesis is "If acid is added to a solution, then the pH of the solution will go down."
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