A. The south pole of one magnet is near the south pole of the other magnet.
Explanation:
Like poles repel.
Unlike poles attract.
Thus:
A should repel each other. (S and S together)
B might not be able to have enough attraction between both magnets to move towards each other so they remain still.
C should attract each other. (N and S together)
D might not be able to have enough repelling power between both magnets to repel each other so they remain still.
Overall, B and D would not have any attraction between each other so they are neutral. C is wrong because they have the strongest attraction while A has the strongest repelling in that situation.
The carpet has a buildup of electrons in it that get released onto your body when you rub across the floor while the hardwood doesn't have electrons built up inside of it.
There are several different types of spectrums that you could expect to find from the gas cloud, but the best option from the list would be "<span>high-frequency spectrum".</span>
