Terminating decimal: The decimal numbers with finite decimal part are known as terminating decimals.

Option (C): $\frac{18}{15}$

$\frac{18}{15}=122$ it is Terminating decimal

: Option (C) is correct

Option (A): $\frac{4}{3}$ 

$\frac{4}{3}=1333333--$ it is a non terminating repeating decimal.

:$\frac{4}{3}$ it is not a terminating decimal.

: option (A) is incorrect

Option (B): $\begin{array}{l}9\\ \overline{7}\end{array}$ 

 $\frac{9}{7}=1.285714285714285714285714$ it is a non terminating repeating decimal.

  :$\begin{array}{l}9\\ \overline{7}\end{array}$ it is not a terminating decimal.

Option (D): $\frac{2011}{2010}$

$\frac{2011}{2010}=1.00047512437810945273$ it is non-terminating non-repeating decimal.

: $\frac{2011}{2010}$ it is not a terminating decimal.