Which of the following best describes a population that is increasing exponentially?

A population that is increasing exponentially is best described by having more births than deaths. In an exponential growth model, a population experiences a rapid increase in size when the birth rate significantly exceeds the death rate, often under ideal conditions and abundant resources. This scenario leads to a consistent and accelerating rise in the number of individuals within the population over time, as each generation adds more individuals than are lost through mortality.

The other options describe different scenarios. A stable population indicates a balance between births and deaths, which does not support exponential growth. Fluctuating growth rates imply some instability and do not align with the continuous growth of an exponentially increasing population. A population growing rapidly with limited resources could suggest a different type of growth pattern, potentially leading to resource depletion or a crash rather than sustained exponential growth.