Answer:
Scientists mostly gain new knowledge through direct observation and applying the scientific method. They would start with a hypothesis and test it, then change it or confirm it. Others would test their confirmation from one point, while the third group would test what the second said. And so on and so forth.
Explanation:
A semipermeable membrane is any biological or synthetic membrane that allows certain molecules or ions to pass through while restricting others.
The answer is D cuz I just looked up a lot of it and saw the pics so ya its D
