Answer: b. An autobiography
What's the situation you have to write about? I'll write it.
If you are referring to Elizabeth Cady Stanton's Declaration of Sentiments, then the answer should be reason. She wrote it in the same manner in which the Declaration of Independence was written which was written in such a way to not be emotional or persuasive, but rather to present a logical and reasonable conclusion based on what was happening.
Answer: So, your main idea or thesis here that you are talking about in this paragraph would be your goal to acheive things out of your own comfort zone.
However, more specifically you could make your thesis on either your desire to make new friendships or relationships / or you could make your thesis be about your desire to experience new situations that are out of your comfort zone..
Hope this helps some!