In the first sentence, the "he" is a nominative as it is a subject.
In the second sentence it is an object as the form "me" is actually "I", but "i" is a nominative form and "me" is an objective form.
In the third sentence "Us" is also used in objective form as "us" is an object of an action by "my sister".
Answer: When you meet the one person that you know for a fact that you'll love as a buddy for the longest while, you can't exactly remember how you lived with your memories without them. My best friend is a huge part of my life, even if we can't see each other because of the pandemic. We're always here for each other no matter what. We don't care about how we look on the outside, we only care for the inside. As you grow up you have to make a choice for that best friend. You either keep them in your life and always be there for them like the old times, or you begin to lose interest and leave yourself with all the memories you had with them when you were younger. Most best friends are like siblings to you, they go through everything with you, they help you stay strong, they support you, they love you. There are so many changes best friends can bring to your life, either big or small. Either way, that change is always a good change that was worth it.
I would say C, Definitions - because dictionaries are used to see what the words mean in usually a brief explanation and there is no history or language origins (some specific ones may but not ALL DICTIONARIES)
The students who marched at Selma were better prepared in a sense that unlike their adult counterparts, they were already briefed on what to expect when this march began. Youth was also their biggest asset as they were energized and determined to promote the civil rights movement in the South. Even before the march, they were already veterans of other movements for equal rights.