Which is the best example of imagery?
A) spotless steel sink
B) exciting new plan
C) old familiar feeling
D) long boring article

This would be third person because they are using the correct pronouns that belongs to third person like he, the name, etc

is basically a good source of getting and others by what you know for example if someone asked a question and you know the answer you could answer it and get some points or if you need on a question you could make a post about it and wait till someone answers it or just look up the question and see if someone else has asked about it