The 3rd sentence is the answer
Answer: symbiosis is not always mutually
Explanation:
Introductory blurbs often contain valuable information. They'll always provide basic information about the passage, like title and author name, but they can also contain important definitions or pieces of useful background knowledge.
Including the good and bad of yourself would be the most honest. Like I'm not the best at math but, I try my best, finish my work and ask for help when I need it. I don't know if this is the kind of answer you're looking for.