Final answer:
DNA fingerprints are created using parts of DNA that are unique to each person, specifically focusing on variable regions like VNTRs or STRs that do not code for proteins but can distinguish one individual from another. So the correct option is B.
Step-by-step explanation:
Scientists use only certain parts of a person's DNA to make DNA fingerprints because those parts are unique to the person. The particular base sequence of DNA is responsible for the production of all different proteins that are present in each living thing, and these sequences can be used to identify individuals due to their uniqueness. Although we share many genetic traits, it's the small variations in the DNA sequence that make each person's genetic code different from another's.
DNA analysis is applied in crime solving, paternity testing, human identification, and genetic testing among other areas. DNA fingerprints rely on analyzing specific DNA regions that are highly variable among individuals - these are known as variable number tandem repeats (VNTRs) or short tandem repeats (STRs). These sequences do not generally code for proteins and are highly individualized, making them ideal for DNA profiling.