Which group of values makes the expression 3x2y−2z undefined? a) x = –1; y = 0; z = 3 b) x = –1; y = 3; z = 0 c) x = 0; y = −1; z = 3 d) x = 0; y = 3; z = −1 e) x = –1; y = 2; z = 1

The correct question is
Which group of values makes the expression 3x/2y−2z UNDEFINED?

we know that
So that the expression is defined, the denominator in (3x/2y) can not be zero
hence 
the value of y = 0 makes the expression UNDEFINED

therefore

the answer is
the option A)x = –1; y = 0; z = 3