A. Personal safety, pollution, and extreme temperatures
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.
noun
1.
used in reference to an activity, cause, etc. that is currently fashionable or popular and attracting increasing support.
"the environmental bandwagon is feeling mighty crowded"
2.
(especially formerly) a wagon used for carrying a band in a parade or procession.
"the colorful bandwagon was later purchased for use in circus parades"
Type 2 diabetes is usually initially treated by following a healthy diet, losing weight if you are overweight and having regular physical activity. If lifestyle advice does not control your blood sugar (glucose) levels then medicines are used to help lower your blood glucose levels.