A news report headline should be short, catchy, and relevant. This type of headline is effective in capturing the attention of readers and conveying the main idea of the news report. Here's why option 'A' is the correct answer:

1. Short:
- Short headlines are easier to read and understand quickly. They are more likely to grab the attention of readers who are scanning through a newspaper or website.
- In today's fast-paced digital world, where information is consumed rapidly, a short headline allows readers to quickly grasp the main point of the news report.

2. Catchy:
- A catchy headline has a strong impact on the reader and piques their curiosity. It encourages them to click on the article or delve deeper into the news report.
- Catchy headlines often use wordplay, alliteration, or puns to make the headline memorable and engaging.

3. Relevant:
- A relevant headline ensures that readers immediately understand the subject matter of the news report.
- It conveys the most important aspect of the story, allowing readers to decide if they are interested in reading further.
- By being relevant, the headline provides a clear indication of what the news report is about, helping readers find the information they are seeking.

In summary, a news report headline should be short, catchy, and relevant. This type of headline maximizes the chances of attracting readers' attention, enticing them to read the full news report, and effectively communicating the main idea of the story.