Which signal word is used to introduce an example or detail?

• A. First
• B. Another reason
• C. In February
• D. For example

Answer: (D)

Signal words that introduce an example or detail help you see when a writer is giving a specific illustration to support a point. When you encounter “For example,” you know the next part will present a concrete instance or piece of evidence to back up the idea just stated. That clarity about illustration is what makes this phrase the best cue for introducing an example or detail. Other options point to something different: “First” signals order in a sequence, not an illustration; “Another reason” adds another justification but doesn’t necessarily present a concrete instance; and “In February” is a time reference. So, using “For example” clearly signals that an example or detail is about to follow.