Either number 1 or number 3.
Bahahaha I don't even know.
sorry
It must be durable and available
By intruding mutations, which are the ultimate source of biological diversity. I think this is it.
The correct answer would be DNA Profiling. When Joe denied being the father of Lisa, Lisa's mom took Joe to the court to prove that he was Lisa's biological father. One way of proving that he's truly the biological father is by undergoing both DNA's into DNA profiling.