As we know the immune system is a complex of cells, tissues, and organs working together to avoid disease, now there are several types of defense, the most simple and first to act are physical barriers like skin or hairs, this stop physically the advance of pathogens, therefore we can say that the correct answer is option C.
Stem an the seeds of the plant
High amounts of saturated salt. Hope this helps!
The Answer is....... D.) 100%.
