Which sentence best signals a cause-and-effect relationship?

• A. Because... As a result, therefore
• B. For instance, in addition, moreover
• C. However, although, yet
• D. First, next, finally

Answer: (A)

Cause-and-effect is signaled by words that tie reasons to outcomes. Because introduces the reason, and as a result and therefore point to what happens because of that reason. When a sentence uses these together, it clearly marks the causal link. The other word groups don’t do that: for instance, in addition, and moreover add information; however, although, and yet show contrast; first, next, finally indicate sequence. So this combination best signals a cause-and-effect relationship.