which of the following names a technique a writer may use in an introduction to engage a reader in an explanatory text .

A. a topic sentence
B. A Diagram
C. a thought-provoking question
D. a concluding sentence

The correct answer is C. a thought-provoking question.

The technique a writer may use in an introduction to engage a reader in an explanatory text is C. a thought-provoking question.

To determine which of the options names a technique a writer may use in an introduction to engage a reader in an explanatory text, let's analyze each option:

A. A topic sentence: A topic sentence typically presents the main idea or theme of a paragraph, but it may not specifically engage the reader in an introduction.

B. A diagram: While a diagram can be used in an explanatory text to visually support or clarify information, it is not typically used in the introduction to engage the reader.

C. A thought-provoking question: This is a technique commonly used by writers in introductions to engage readers. By asking a question that stimulates curiosity or piques interest, the writer can encourage the reader to continue reading to find the answer.

D. A concluding sentence: A concluding sentence wraps up a paragraph or section of a text, providing closure to the previous information. It is not typically used in an introduction to engage the reader.

Therefore, the correct choice is C. A thought-provoking question.