г) $$\sqrt[3]{3\sqrt[4]{3^3}\sqrt{3}}$$.

г) $$\sqrt[3]{3\sqrt[4]{3^3}\sqrt{3}}$$.

$$\sqrt[3]{3\sqrt[4]{3^3}\sqrt{3}} = \sqrt[3]{3\cdot 3^{\frac{3}{4}}\cdot 3^{\frac{1}{2}}} = \sqrt[3]{3^{\frac{4}{4}}\cdot 3^{\frac{3}{4}}\cdot 3^{\frac{2}{4}}} = \sqrt[3]{3^{\frac{9}{4}}} = 3^{\frac{9}{4*3}} = 3^{\frac{3}{4}} = \sqrt[4]{3^3} = \sqrt[4]{27}$$

Ответ: $$\sqrt[4]{27}$$