Answer :
It seems that you have missed the necessary options to answer this question, but anyway, here is the answer. So based on the excerpt above from "Dorothea Lange", on Lange's words, it is reasonable to infer that, Lange’s work was significantly influenced by her experiences. Hope this answers the question.
Answer: It is reasonable to infer that Lange's work was significantly influenced by her experiences.
In this excerpt, Lange describes her experiences with polio. She argues that the disease was the most important thing that happened in her life. She also states that this was something that guided her, formed her and influenced her in many different ways. We can assume that this influence was also significant in her work.