What important temperatures does the celsius scale use for a basis? a) the boiling and freezing point of water b) temperatures on the sun and the moon c) the rang of human body temperatures d) high and low air temperatures

I would think A, but I am not 100% sure.

I think:
A) the boiling and freezing point of water 
Because the freezing point is taken as 0 degrees Celsius and the boiling point as 100 degrees Celsius.

Julia would be observing a. static electricity was caused by her sweater rubbing against her shirt and transferring electrons. she didn't touch anything metal, so that would cancel out b.she most likely didn't rub her sweater against her hair either, so that cancels out c.she also didn't scoot across the carpet while trying to take her sweater off, that cancels out d.so that leaves a.a. is correct.