To divide fractions, you multiply by the reciprocal of the divisor. In this case, you want to compute:
\[ \frac{3}{10} \div \frac{1}{3} \]
This can be rewritten as:
\[ \frac{3}{10} \times \frac{3}{1} = \frac{3 \times 3}{10 \times 1} = \frac{9}{10} \]
So the answer is:
\[ \frac{9}{10} \]
Therefore, the correct response from your options is:
910 (which represents \( \frac{9}{10} \)).