[tex]729\text{ (option D)}[/tex]Explanation:[tex]\begin{gathered} An\text{ expression with base 3 and exponent of 6} \\ a^b\colon\text{ where a = base} \\ b\text{ = exponent} \end{gathered}[/tex][tex]\begin{gathered} a\text{ = 3, b = 6} \\ \text{The expression = }3^6 \\ 3^6=\text{ 3}\times\text{ 3}\times\text{ 3}\times\text{ 3}\times\text{ 3}\times\text{ 3} \end{gathered}[/tex][tex]\text{The value of }3^6\text{= }729\text{ (option D)}[/tex]
