Answer:
Option C, the population of owls decreases
Step-by-step explanation:
The growth of population of owl is linked with the adequate supply of food i.e mice.
The higher the population of mice , the higher will be the population growth of owls.
Thus, As the population of mouse decreases, the owls will not get sufficient food. There will be scarcity of food which will lead to the survival of the fittest owl only and hence the owl population will decrease eventually.
Hence, option C is correct