Answer: A. I have found that trials in my life have had profound, positive effects on the way that I view myself and the world.
Step-by-step explanation:
The main point of this excerpt is captured by this option. It also summarizes the information being given by the excerpt by condensing it into a concise form.
This is the purpose of a topic sentence. It is meant to summarize the information in a paragraph so that the paragraph is able to expand on this sentence and give evidence of it. This is what this option does so it is the best option for a topic sentence.