Which of the following describes concrete details? (1 point)

A. Exact meanings of all the key words in a text

B. Words that illustrate an idea

C. Exact words taken from a speech or text

D. Specific and observable facts that help with understanding

The correct answer is D. Specific and observable facts that help with understanding.

To determine which option describes concrete details, we need to analyze each option and understand its meaning.

A. Exact meanings of all the key words in a text: This option refers to understanding the precise meanings of the important words in a text. While it is important for comprehension, it does not specifically describe concrete details.

B. Words that illustrate an idea: This option refers to words that are used to paint a visual or descriptive picture of an idea. While these words can be specific and detailed, they may not necessarily be concrete.

C. Exact words taken from a speech or text: This option refers to using the exact words from a speech or text. While this can be important for citation and accuracy, it does not directly pertain to concrete details.

D. Specific and observable facts that help with understanding: This option is most closely related to concrete details. It describes specific facts that are observable and help with understanding a topic. These details are often tangible and can be directly observed or experienced.

Therefore, the correct answer is D. Specific and observable facts that help with understanding, as it accurately describes concrete details and is the best choice among the given options.