Why is it important to read text boxes? •They give the other side of the story.
•They tell why an author included a photo.
•They usually contain hints about the main
idea.
•They can provide information not found
in the text.

provide information

Explanation:

i am very sorry if I'm wrong but they give info about the topic

kennedy creates personal credibility by saying he is more than fit to lead. he talks about the sixty day period that he constructed administration, and says based on that he will be an acceptable leader.

jfk has a great reputation as an american citizen. he fought in wwii, and earned the navy and marine corps medal. he saved several men on his pt-109 patrol torpedo boat after an attack by the japanese navy. he also served in congress for the 11th congressional district for massachusetts, and served three terms in the house of representatives.

explanation:

what he !