Answer:
They were the two companies hired to build the railroad so guess A.
Explanation:
The independent variable in this scenario of a drug test would have to be <u>Drug X. </u>
<h3>Independent Variable</h3>
- Is the variable that is added to an experiment to see if a change will happen.
- Can be said to be the cause of an event after it is added to an experiment.
In this case, the drug is the independent variable because it was given to people to see if it will lead to a change in them such that they would become less anxious.
In conclusion, Drug X is the IV.
Find out more on independent variables at brainly.com/question/82796.
Answer:
electricity
Explanation:
Electricity meant that the factories did not need water to power their facilities.
The answer is energy you need energy