Unexpected means it was something you did not "expect" to happen such as a car crashing into you which means this is wrong.
Unfair is any injury.
Unnecessary means it was never needed and could have been prevented/not done therefore unnecessary is the best term.
Yay magic carpet ride a whole new world
The answer is D. Increased Appetite. When you are dehydrated, your thirst increases, not your appetite.
Answer: to help determine a healthy eating pattern that represents a balanced diet