Consider these four powers.

(–4)0

30

100

(2
3
)0

What do these powers have in common?
a All the powers have an integer base.
b All the powers equal 0 because the exponent is zero.
c All the powers equal 1 because any number to the power of 0 equals 1.
d All the powers equal –1 because any number to the power of 0 equals –1.