Answer
(a) $0.1\%$
Work Step by Step
If we note by $I$ the immigration rate and by $E$ the emigration rate, we have: $$\begin{aligned}
\text{Growth rate}&=\frac{(\text{CBR} + \text{I}) - (\text{CDR} + \text{E})}{10}\\
&=\frac{(9+3)-(11+0)}{10}\\
&=0.1.
\end{aligned}$$ The growth rate is $0.1\%$.
The answer is (a).
