The answer here is B they are each made of matter. some are compounds, and some are elements they all contain Atoms this is because Silver and Oxygen are elements while Carbon Dioxide and Water are compounds. Although you do not have the choices down, I have come across this question before.
Because I like to help people:)
A natural science is the knowledge of objects observable in nature, behavioral science is the scientific study of human or animal behaviors
Answer:
This is an example of hypothesis testing.
Explanation:
A hypothesis is assumed to find out a causal relationship between two factors. Here, cheese or milk is independent factor and an upset stomach is a dependent factor. Victor wishes to confirm the causal relationship between stomach upset and intake of cheese or milk; so that her lactose intolerance shall be confirmed. Therefore, this activity is a form of hypothesis testing.
she should write it in a list utilizing bullet points or numbers