Answer:
B. Safe
Explanation:
You are save because you caught the ball before it hit the ground but if it it the ground and you did not catch it then either strike or if you arlready have to then you are out.
The answer is body's line of defense. The first line of defense which includes physical as well as chemical barriers would defend the body from infection. It would include the tears, cilia, stomach acid,urine, white blood cells,mucus and the skin. The skin is the largest organ and would act as a barrier from pathogens. If first line of defense won't work the second line will then be activated.
