Answer:
[tex]\huge\underline{\red{A}\blue{n}\pink{s}\purple{w}\orange{e}\green{r} -}[/tex]
a basic rule of exponents and powers states that if the power / exponent of the given base is a negative integer , we can reciprocate the base and change the power from negative to positive!
According to this rule ,
[tex]6 { }^{ - 3} \: can \: be \: written \: as \\ \\ \dashrightarrow \: (\frac{1}{6} ){}^{3} [/tex]
therefore , 4th option is correct !
hope helpful :)
