Answer:
The correct answer is D.
Explanation:
A confounding variable is a variable that you didn’t account for. It is when an experimenter cannot tell the difference between the effects of different factors on a variable. This method is used to influence the outcome of experimental design.
What were the multiple choice answers need more of a description
Of course it has, many third world countries require modern technology to grow and flourish. Before the industrial revolution in the United States, many people worked extremely hard to make clothes and create armory but after the revolution, the impact was huge sewing machines came into work, interchangeable parts and etc. we now use technology that we have to help countries that are still developing.
