Which of the following events would decrease competition for resources in an ecosystem? A- a fire has killed off a portion of the vegetation
B- a drought reduces the amount of water available to an ecosystem
C- a disease reduces the population of rabbits in a grassland area
D- many offspring are produced in a single year

C. A disease reduces the population of rabbits in a grassland area

Explanation:

If a disease reduces the size of a rabbit population, there will be a decreased amount of competition for resources.

Less rabbits means that there will be less competition, since there will be more food available.

For example, there would be less competition in a rabbit population of 10 rabbits compared to one of 20 rabbits. This is because there are less rabbits competing for food.

So, the correct answer is C. A disease reduces the population of rabbits in a grassland area