Which of the following is not a fluid? air water aluminum oil

At room temperature, air, water, and oil are fluids.  They will
all take the shape of whatever container you put them in.

Aluminum doesn't do that unless you melt it first.  Aluminum,
at room temperature, is a solid, not a fluid.

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.