In An Inconvenient Truth, the most likely reason the author uses the heading A Silent Alarm is to
use an image that all readers can visualize.
show there is a problem that many do not know about.
to bore the reader.
frighten readers so they will take action.
The most likely reason the author uses the heading "A Silent Alarm" is to show there is a problem that many do not know about.
The most likely reason the author uses the heading "A Silent Alarm" in "An Inconvenient Truth" is to show there is a problem that many do not know about.
To determine the most likely reason the author uses the heading "A Silent Alarm" in "An Inconvenient Truth," we can analyze the purpose behind using headings in general, and then examine the specific wording in this particular heading.
Headings in a text often serve as markers or signposts, giving readers a preview of the content and helping them navigate through the material more effectively. Authors use headings to convey information, capture attention, and guide readers' understanding of the topic at hand.
In this case, the heading "A Silent Alarm" suggests that the author is trying to accomplish multiple objectives simultaneously. Let's assess the given options in light of these objectives:
1. "Use an image that all readers can visualize": While the term "silent alarm" has visual qualities, it is not an instantly recognizable image that all readers can visualize on its own. Therefore, this option is less likely.
2. "Show there is a problem that many do not know about": This option aligns with the use of headings as signposts, as it suggests that the author is aiming to highlight an issue that may not be widely acknowledged or understood. The choice of "A Silent Alarm" implies that the problem is significant but unnoticed, amplifying its importance. This option appears reasonable.
3. "To bore the reader": Using a heading that is designed to bore the reader would be an illogical approach for any writer, as it would defeat the purpose of engaging and informing the audience. Therefore, this option is unlikely.
4. "Frighten readers so they will take action": While the wording of "A Silent Alarm" can potentially evoke a sense of urgency or concern, it does not explicitly aim to frighten readers. Instead, the heading seems more focused on alerting readers or raising their awareness about a hidden problem. Therefore, this option is not the primary reason for using the heading.
Considering these points, the most likely reason the author uses the heading "A Silent Alarm" is to show there is a problem that many do not know about.