Answer:
The risk is riding with no helmet. The solution is to put a helmet on, and don't do bad things just because others do them.
Explanation:
Answer:
A typical example of a physical barrier to an infection is the <em>SKIN</em>
Explanation:
The skin is a protective coat that shields the tissue from exposure to physical contact, hence; act as a barrier to infection that would have easily penetrated into the body system. Skin has different layers that achieves this process, the outer layer, middle layer and the inner layer. every layer has its vital role to ensure infections are barred from entering the body through physical means
The answer to your question, is D
hope this helps :D