Option 4, 'a quote from a customer describing how much their electric bill was lowered,' best supports evidence that solar panels save money. You are using a first hand source to prove to the audience that solar panels save money.
The answer is not A, because it is not clear enough. Who's we?
The answer is not B, the sentence is not clear about the building they are visiting.
The answer is not C, it's not clear about what building they are talking about.
So your answer is D.
I feel like this is talking about Searches. It is protecting us against cops unlawfully searching our houses for no reason. A warrant with a reason to search is How cops can get the criminals.
Answer:
Primary:
Diary
Biography
Photograph
Videotape
Original Artwork
Interview
Speech
Actual words of people who witness an event
Secondary:
Textbook
Words Written
Arcitecture
Encyclopedia
Explanation:
