D) The photographs had been taken by a friend of me grandfather's.
Why? because " taken " is a passive word. It's already been done.
Yes, they are being used correctly.
Community service is extremely important to highlight social agendas in society and to promote justice and support communities and groups that are fragile and marginalized in our country. Participating in this type of activity during high school is essential for the student to understand his role as a socially privileged individual, in addition to having knowledge about social issues and developing his sense of compassion and generosity, since community service is a job that we do it for the people who need it, without receiving anything in return, besides the satisfaction of promoting the good.
However, it is important that this participation is a choice of students. This is because community services need dedicated people who participate in activities out of love for others and concern for the community. A person, who is obliged to participate, will not have these characteristics.
It has the earmarks of a good convo because the sentences arent dragged along. its simple but gets the thought through. also its back and forth and not just one person doing most of the talking