Final answer:
In an informational text, the central idea is supported by relevant details, such as facts, statistics, and expert opinions, included by the author throughout the text. These details help to substantiate the author's main claim or thesis, and are presented with proper analysis and transition to maintain a cohesive narrative flow. The correct option is 1.
Step-by-step explanation:
In an informational text, the support provided for the central idea of the text is:
- Relevant details included by an author throughout the text.
These relevant details come in the form of facts, statistics, expert opinions, and concrete examples which align and uphold the author's main claim or thesis. An effective informational text will feature a clear topic sentence, which introduces the main point(s) and guides the narrative flow.
Informational texts should be factual, and any inferences or conclusions drawn within them need to be based on this factual evidence rather than reader-formed opinions or predictions.
Transitions in an informational text also play a role in supporting the central idea, as they help to create a coherent flow of ideas, but they are not the primary form of support for the central idea.
When evaluating the effectiveness of the central idea, it is important to ask whether the author has provided enough reliable facts to justify the conclusions. Additionally, an assessment of the author's credibility and the objectivity of the tone can provide further insight into the validity of the informational text. The correct option is 1.