An argument in which the premises do succeed in guaranteeing the conclusion is called a (deductively) valid argument. If a valid argument has true premises, then the argument is said also to be sound. All arguments are either valid or invalid, and either sound or unsound; there is no middle ground, such as being somewhat valid.
Option $(C)$, has two premises and a conclusion that follows logically from them.
Choices $(A),(B)$ and $(D)$ have conclusions that do not follow the premises.
So, the correct answer is $(C).$