3-2/3-2=1 because numerator and denominator are the same!
Since 1 is none of the listed answer options, I would have to guess what they represent.
(a) Example: 3=3-2/3-3=33/32=33-2. To get the answer 3 from 3-x/3-y, where x and y represent positive numbers, then y-x=1, in other words the difference between the exponents must be 1, and the more negative of these must be in the denominator.
(b) ⅓. This is the inverse of (a). In this case the more negative of the exponents must be in the numerator.
(c) 27=33 or 27=1/3-3. Examples: 3/3-2=31+2=33=27; 3-2/3-5=35-2=33=27.
(d) 243=35. Examples: 3-2/3-7=37-2=35=243; 32/3-3=33+2=35=243; 33/3-2=33+2=35=243.
Now check what the question should have been and then work out for yourself which answer option applies.