Heidi has a writing assignment to connect the code book to her own life. which line from her assignment best demonstrates Hidi’s connection with the text.

 D. After reading The Code Book, I will be more careful about the information i share online.

Explanation:

The above-mentioned line best demonstrates Heidi's connection with the text, because Heidi applies what she has learned in a book in her own life. The purpose of this assignment was to connect the Code book to a student's own life. Upon reading the Code Book, Heidi is determined to be more cautious when it comes to the information she shares online. In this way, she directly uses the knowledge she has gathered from a book in a real-life situation.

All the other options do not connect the book to Heidi's own life in any way: using encryption to catch the criminals, the conclusion that much of the world's information is unprotected, as well as the examples of code-breaking techniques, in this context, are too general and have no real connection with Heidi's life.