Afox population eats rabbits that have a population cycle of about ten years. which is a likely effect of the foxes preying on the rabbits? the rabbits will change to a five-year population cycle. the rabbits will change to a twelve-year population cycle. the foxes will have a ten-year population cycle. the foxes will have a five-year population cycle.

The most likely effect of the 'foxes preying on the rabbits' would be that the 'foxes will have a ten-year population cycle'.

Explanation:

The rabbits that have a 'ten year population cycle' would keep thriving at the same pace but the foxes who depend on the rabbits for their survival would achieve a ten year population cycle through a continued process of evolution due to the automatically formed relation between peak population increases in both the species.