Suppose a population of insects in a lab has been fed a restricted diet and kept in an enclosed container. The insects have reached carrying capacity. What could cause the insects' carrying capacity to increase?

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a
If the insects were restricted to less air in their container
b
If the insects were allowed more light or darkness
c
If the insects were placed into a smaller container with the same amount of food
d
If the insects were placed into a larger container with more food

d. If the insects were placed into a larger container with more food