What is the most common threat to the human body from an invading virus?
a. viral fluids will be produced in the bloodstream.
b. acids will ferment in the digestive system.
c. viral reproduction will destroy once healthy cells.
d. muscle tone in the heart will be stimulated.

The most common threat to the human body from an invading virus is, option C. Viral reproduction will destroy once healthy cells. Viruses affect or alter the normal functioning of the body, thus resulting in different illnesses such as colds, flu and other viral diseases.

I’m going to guess these are the choices: a) recreational skiing developed in the mid-19th century b) it was originally invented as a way of getting from place to place in snowy regions c) downhill skiing is currently the only common form of the sport d) it mostly evolved from snowshoeing- if that’s the cases then the answer would be c) downhill skiing is currently the only common form of the sport

True is the correct answer