True is the answer to your question
<span>A.)p2 + 2pq + q2 = 1.0</span>B.) p2 + q2 = 1.0 - Correct Answer
<span>C.)p2 + 2pq + q2 = 0</span><span>D.)p2 - 2pq + q2 = 1.0</span><span>E.)p2 - q2 = 1.0</span>
It is definitely not a primary source: this would be a book itself.
Now, is it a tertiary source? I don't think so: the author of the review should have read the book and should only be referring to this book in the review.
I think it's a secondary source.
Answer:
Chloroplasts are found in plant cells, they make up the green pigment ( chlorophyll ) which manufactures food for the plant during photosynthesis process.