Which sentence explains what visuals in an informational text do? They can give the reader something nice to look at. They can help the reader understand the information and attacks. They can give the reader an idea of what types of images the author likes, or they can replace several paragraphs of information in the text.

The sentence "They can help the reader understand the information and attacks." explains what visuals in an informational text do.

The sentence that explains what visuals in an informational text do is: They can help the reader understand the information and concepts.

The sentence that explains what visuals in an informational text do is:

"They can help the reader understand the information and attacks."

To determine the correct answer, let's analyze each option:

1. "They can give the reader something nice to look at." - While visuals in informational text may indeed be visually appealing, their primary purpose is to serve a functional role in enhancing understanding, rather than simply providing something pleasant to look at.

2. "They can help the reader understand the information and attacks." - This option accurately describes one of the main functions of visuals in an informational text. Visuals such as charts, graphs, diagrams, or illustrations can assist readers in comprehending complex information or concepts more easily.

3. "They can give the reader an idea of what types of images the author likes." - While it is possible for visuals to reflect the author's stylistic preferences, this is not a primary function of visuals in an informational text. The focus is typically on aiding comprehension and conveying information effectively.

4. "They can replace several paragraphs of information in the text." - Although visuals can sometimes summarize information concisely, their primary purpose is to support the text rather than replace it entirely. They should be seen as complementary elements that enhance understanding, rather than outright substitutions for textual content.

Therefore, option 2 is the correct answer as it accurately explains that visuals in an informational text help the reader understand the information.