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Scientific experiments must be able to be repeated by multiple scientists to verify the results that are obtained. Which of the following is an example of a scientific question that could be used to create an easily reproducible experiment?

AWhy do people like to watch television?
BDoes the mass of a rocket affect the distance it can travel?
CWhat makes the sky blue?
DDoes sugar or salt have a greater effect on plant growth?

Verified Answer :

johnkellock

d. Does sugar or salt have a greater effect on plant growth?

This question has measurable outcomes, that can be repeated and tested. 

Answer: d. Does sugar or salt have a greater effect on plant growth?

Explanation:

A scientific question is said to be reproducible if it can be answered by many scientists on the basis of either applying similar, improvised or different methodologies.

d. Does sugar or salt have a greater effect on plant growth? is the correct option. This is because the sugar and salts are the two independent variables whose affect is to be measured on the test variable or dependent variable that is plant growth. This question can be answered using suitable methodologies and by different scientists as the question is testable.

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