My teacher tolld us to find the generalization of zero i cant find that.

Zero exponent
that means 0 times of that number
remember that x^3 also equals x^3 times 1
so when you have x^0 that also equals x^0 times 1 except there are no x's to multiply so it is always just 1

x^0=1 always
x can be any number

the generalization is (any number)^0=1

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.