Answer:
1/3
Explanation:
Your choice of answer must be consistent with the instructions.
The only answer with no exponent is the correct one:
1/3
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The rules of exponents tell you ...
(a^b)(a^c) = a^(b+c)
3^(-4) × 3^3 = 3^(-4+3) = 3^-1
and
a^-b = 1/a^b
so
3^-1 = 1/3^1 = 1/3 . . . . written without an exponent