What factor contributes to the proliferation of insects in warmer weather?

The correct answer identifies increased reproduction rates as a key factor contributing to the proliferation of insects in warmer weather. Warmer temperatures create an optimal environment for many insect species, allowing them to reproduce more quickly and frequently. Insects are ectothermic, meaning their body temperature and metabolic rates depend on external temperatures. This increased metabolic activity results in shorter life cycles and higher offspring production during warmer months, leading to population surges.

In contrast, while increased food availability, higher humidity levels, and a decrease in predators can influence insect populations, they are not as directly linked to the rapid proliferation attributed to temperature increases. Increased food availability might support larger populations, but without the reproductive advantage of warmth, it would not alone create a substantial increase. Similarly, higher humidity can benefit some insects, but it does not directly cause a rise in reproduction rates like warmth does. Lastly, a decrease in predators could allow an existing population to grow, but again, it doesn't fundamentally change the reproductive capabilities of the insects themselves during warmer conditions.