Density-dependent factors operate most strongly when a population is

• large but sparse.

• large and dense.

• small and sparse.

• small, but growing.

Density-dependent factors operate most strongly when a population is Large and dense

Explanation:

There are certain factors that affect the growth of the population in accordance with the population density, these are known as density-dependent factors. Some of these factors are - disease, migration, food availability etc. The growth of population drops with increased density in population. As every living being has a limitation on their growth.

One of its examples is of food availability among a particular group of organism, when a particular species of animal is small in number, the amount of food is sufficient for them but when it increases in population the food becomes insufficient for them leading to the death of some of those species.