Answer:
answ is last one.
explanation: n>0 means that n is positive number so it will be on right side of zero.
also if u are wondering what is the difference between first one and last one:
empty point like we have in last one means that it doesn't contains that point.
colored point means that it contains that point too.
we have n>0, it doesn't contains zero.
first one would be answer if we would have :
n≥0
