Question

which tool of biotechnology do investigators use when trying to connect a suspect with a crime?
recombinant dna
dna fingerprinting
rna polymerase
plasmids

Explanation:

Recombinant DNA is used for genetic engineering to combine DNA from different sources, not criminal matching. RNA polymerase is an enzyme that synthesizes RNA, unrelated to forensic identification. Plasmids are small DNA molecules used in genetic engineering, not for linking suspects to crimes. DNA fingerprinting analyzes unique patterns in an individual's DNA, which is the standard biotechnological tool for forensics to connect suspects to crime scene evidence.

Answer:

B. DNA fingerprinting