Answer: B: is used to transfer information from parents to their offspring.
Explanation: DNA is inherited from each parent by the process of reproduction. Reproduction is the process of forming a new individual to pass down the genetics by the process of fusion of the male and female gamete. DNA is passed from the mother in the egg. It is passed down from the father in the sperm. The DNA in these cells is haploid i.e., n. When they fertilize, it becomes 2n. This ensures that both parents' genetics are passed on without disturbing the chromosome number. It is essential to note that there is a lot of variation between brothers and sisters as well. This is due to the large variety of genetics available from both parents and their ancestors. All variations are not visible or dominant in the case of a person. They might be visible in one progeny and not in the next. The only case there is a similarity is the case of identical twins. On recombination, the genes from various previous distant relatives weaken.
Same thing happens with animals, too. That's how natural selection happens. Due to a change in the environment, animals with better traits to survive can pass those down to their offspring.