Osmosis is the movement of only solvents (water) from a low to high concentration through a semipermeable membrane.
The answer is "<span>Health issues are determined by a complex interaction of environmental and genetic factors, which is difficult to predict." i hope it helps</span>
I believe it's number 4 because similar to when wrong blood types are transfused into a body, the immune system will see the donated organ as a foreign object and attack it to protect the organism (human).