Which question is the best scientific question?
why does a duck eat?
does a duck like what it eats?
should people eat duck?
what does a duck eat most often?

Why does a duck eat?

If we take a look at the scientific method, the first step is observation. We need to observe things and then we move towards the formation of a hypothesis. So by looking a duck while the duck is eating, the first question that must come to our minds should be " Why does a duck eat?" And hence we can say that this is the best scientific question as it leads us towards the rest of scientific research.

answer; i believe that the correct answer is (lung);