#### Answer

$\frac{\sqrt 3}{\sqrt 3}$

#### Work Step by Step

Rationalizing the denominator involves multiplying both the numerator and the denominator of the fraction with a term that is the same as the denominator in order to remove the radical in the denominator.
Therefore, to rationalize the denominator of $\frac{5}{\sqrt 3}$, we multiply by $\frac{\sqrt 3}{\sqrt 3}$.