Hello from MrBillDoesMath!
Answer:
The last choice on the list, -z/y^7
Discussion:
- (14x)^0 y^-7 z => m^0 = 1 if m <> 0
-1 * y^-7 z => y^-7 = 1/y^7
-z/y^7, which is the last choice on the list
Thank you,
MrB