i think c. is the best answer , we just got off that topic like a week ago .
Answer:
b. only a conclusion indicator
Explanation:
A conclusion indicator can be defined as a premise capable of indicating that a statement is a conclusion. Generally, a conclusion indicator is found prior to the final conclusion, but this terminology can also be observed at the end of the sentence/paragraph. The conclusion indicator is a synonym of "therefore". Some examples of conclusion indicators are: thus, accordingly, indeed, showing that, thereby exhibiting, etc.
Considering the world population trend over time..
It is option C. population growth.
