1. People sometimes argue and complain over petty matters in church meetings or throughout the week. (See Philippians 2:1-8; 14-15)
These verses teach us that if we have charity and act in charity then we will be able to better communicate with those around us. We need to be less concerned with ourselves and learn to love and serve those around us. When we want to complain, we should hold back those words and we will get through the "storm" and all will be better off for the way we conduct ourselves through hard times or disagreements.
2. Many youth feel that their parents' testimony is sufficient for them. Since they have good parents, they rely on them for all of their spiritual strength. (See Philippians 2:12-15 and Institute manual commentary Philippians 2:12 "Work out Your Own Salvation with Fear and Trembling"[pp. 361-62]. We need to be sturdy on our own, through our Faith in Christ. We cannot be a light to those around us if we do not contain the light. Having not our own testimony, we will not be able to help and guide anyone unto Christ. I really like how in the institute manual Elder Oaks reminds us that it is not enough for us to simply obey the commandments, but we need to teach truth to others.
3. An investigator is considering joining the Church, but his family will no longer associate with him if he does. (See Philippians 3:7-16; 4:13)
If we will sacrifice all, we will know Christ. How much stronger will our testimonies be if we can do that, as we will have a more full understanding of Christ and his atoning sacrifice. "I can do all things through Christ which strengtheneth me" Sharing these scriptures with someone who is going through something like this would probably be very helpful to them as they contemplate how they will continue on the path of righteousness.
4. How is this assignment an example of the principles taught in 2 Nephi 32:3? When we have a question, there is always an answer in the scriptures. Heavenly Father does speak to us and has given us keys of understanding through the scriptures and modern day prophets as well. If we seek, we shall find.