Scientist have believed for many years that light does not penetrate below 200 meters of ocean water. What experimental method would best test this hypothesis and why?

Answer:
A
Explanation:
I do believe that's how scientists have actually done it in the past.
Answer:
The Answer is A. Send a robot to measure the total light penetration at various depths of the oceans and plot the data on a graph, because light penetration may change with depth
Explanation:
This way they don't have to send a human to low depths with high water pressure. much safer and efficient.
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