The cause of her joy.
Explanation:
The narrator realizes that adhering to those guidelines will result in her happiness. His motivation revolves around making her happy.
I thinks it's B but C can also be an answer but I would go with B
<span>It offers illustrations to help make the information in the text clearer.
The set of questions listed helps the reader understand what kinds of inquiries they can pose to themselves, enabling them to structure and create factual research for their writing. This aids in clarifying what steps are needed for finding reliable information at the start of a research topic.</span>
