Someone plz help me :(

answer; i believe that the correct answer is(d) nondisjunction during meiosis;

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."

a=c and then d= c because of the band so you get ac/dc and you add them together you get sound waves