Anita wants to introduce the situation. She begins the story by giving background information about her brother Anand and his inventions.
Class 7 English Poorvi Unit III Chapter 1 My Brother’s Great Invention NCERT solutions
Class 7 English Poorvi Chapter 1 My Brother’s Great Invention question answer
Anita says “let me put you in the picture” to introduce the situation to readers. She explains who she is, who Anand is and describes his history of creating troublesome inventions. This helps the reader understand the events that follow in the story, especially regarding Anand’s latest creation—the burglar alarm—and sets the tone for the rest of the narrative.
For more NCERT Solutions for Class 7 English Poorvi Unit 3 Dreams and Discoveries Chapter 1 My Brother’s Great Invention
https://www.tiwariacademy.com/ncert-solutions/class-7/english/