Bipalium kewense is a species of flatworm that can reproduce sexually; however, instead it usually breaks into two pieces, each of which becomes a fully functioning adult.What is the main method of reproduction for these flatworms?

The flatworm breaks into pieces, and each piece grows into a complete adult. This is fragmentation, an asexual method of reproduction. The correct choice is fragmentation; fertilization involves sex cells, while sporulation involves producing spores.

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