Which of the following is NOT considered a premise indicator?

The reasoning behind why the identified answer is accurate lies in understanding the role of premise indicators versus conclusion indicators in logical reasoning. Premises are statements or propositions that provide support or evidence for a conclusion. Indicators help signal whether the surrounding statements are functioning as premises or conclusions in an argument.

The terms "since," "for that reason," and "we know this by" all serve as indicators that point to the provision of support or evidence—characteristics typical of premises. For instance, "since" is used to introduce reasons contributing to a claim, while "for that reason" and "we know this by" imply that the statements following them are intended to bolster the argument or conclusion.

In contrast, "thus" is commonly recognized as a conclusion indicator. It suggests that what follows is a result or inference drawn from previously stated premises. Therefore, recognizing "thus" as a conclusion indicator differentiates it from the other options, which are linked to presenting premises. This is why identifying it as the answer to the question about not being a premise indicator is accurate.