The correct option is D (i), (ii) and (iii)
Sexual reproduction is the process in which two parents are involved which produce two types of gamete i.e., male and female. The gametes fuse to form the zygote during fertilization. This is a compulsory event which allows the continuation of the species. The offsprings resulting from asexual reproduction are called clones. However, genetic recombination and variation the offsprings can be seen in sexual reproduction; hence, they are not clones. Thus, the correct answer is option C.