Which is a density-independent factor in controlling a population
a)water supply
b)access to light
c)predators
d)floods

D)floods

Explanation:

The factors independent of the density of a population are defined as those whose impact is not affected by the size of the population. All species, including humans, are influenced in a similar way, regardless of population size. Among these independent factors are climate, forest fires and natural disasters, such as floods.