Final answer:
Asexual reproduction in Astrammina Rara does not involve the combination of egg and sperm, and it produces offspring that are genetically identical to the parent, thereby reducing the variation in the offspring.
Step-by-step explanation:
The question pertains to asexual reproduction in Astrammina Rara. In asexual reproduction, an organism produces offspring that are genetically identical clones of itself without the involvement of gametes from two different parents. This means there is no genetic material being mixed from two sources, therefore the variation in the offspring is reduced compared to sexual reproduction where sperm and eggs combine.
Asexual reproduction does not involve an egg and a sperm (answer A), nor does it require a male and a female (answer B). Instead, it is a singular reproductive process by which an organism can reproduce on its own, leading to little or no genetic variation in the offspring (answer C). Hence, sexual reproduction, as opposed to asexual, increases the variation among offspring due to the combination of genes from both parents, but this is not the case in asexual reproduction.