Why is it important for a researcher to know all safety procedures and where all safety equipment is stored even if they never have an accident?

It is important because they never know. Anything can happen at anytime or any place so being prepared is always good. :)

It's important for a researcher to know all safety procedures and where all safety equipment is stored even if they never have an accident because this information could save your life.  Even if you've never made a mistake or had an accident there's always that chance that you mess up and something bad happens and if you didn't know the safety procedures or where safety equipment is it could cost you your life and possibly the lives of others.

Most likely a is the answer - because  you generate   38 atp's but also consume an atp.   each atp gives approx. less than 4 kcal so probably a is the closest answer.