The group of words that is the complete infinitive phrase is "to avoid harmful exposure to the sun's direct rays. The head of the phrase would be "to avoid" and the rest to the phrase would the the direct object to "to avoid".
The correct answer is the last option "A photo of Hugh Bennett speaking"
Explanation:
There are multiple reasons why a photo of Hugh Bennet is the most appropriate image to support this sidebar. First of all, in this sidebar, there are different quotes by Hugh Bennet expressing his thoughts or opinions about the impact of Americans in the land. Also, at the end of the sidebar, there is additional information about the life of Hugh Bennet which supports the previous text of the sidebar. Finally, any of the other options seemed to be related to the sidebar, we do not know who Dorothea Lange is, the article is not related to child work, and the Dust Bowl region is not specifically mentioned.
The reported speech is: "Anne and Jack had had a chat on Skype".
