With pointed fangs I sit & wait. With piercing force, I seize my bait.
Grabbing victims, & chomping tight; physically joining with a single bite.
What am I?

i think its b

explanation:

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."

weathering is the answer.