It it important because it makes people wonder how things work and are made which makes it so they want to move forward with experiments <span />
D. is the answer
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D-number of electrons in the outer energy level.
Answer:
A. Warning
Explanation:
Out of all said choices, the best choice would be warning since it would fit the sentence the most.
"A Warning notifies you that danger is present." compared to:
"A Hazard notifies you that danger is present."
"A Safety notifies you that danger is present."
"A Danger notifies you that danger is present."
