The correct option is
B To preserve the genotype of organism
The clone is a population of cells or individuals which are genetically similar to the donor cell or individual. It can be performed by using the complete organisms or the cells from the single parent through the method of asexual reproduction. Its main purpose is to preserve the genotype of an organism. The cloning is of two types namely:
i. Gene cloning at the molecular level and
ii. Cloning of the organisms.
Thus, the correct answer is option B.