How long does the pupal stage of mosquitoes typically last?

The pupal stage of mosquitoes, commonly referred to as the "tumbler" stage due to their unique shape and movement, typically lasts for about 2 to 3 days under favorable environmental conditions. This period can vary slightly based on factors such as temperature and humidity but averages around three days in optimal conditions.

Pupae are not feeding and don’t undergo significant transformation during this time, as they are simply preparing for their emergence as adult mosquitoes. Therefore, the choice indicating 3 days is aligned with the biological development of these insects, reflecting the commonly accepted duration for this life stage.

Other timeframes mentioned in the options, such as 1-2 days or 1-2 weeks, do not accurately represent the average duration of the pupal stage for mosquitoes. A duration of 1-2 days is often too short for most species, while 1-2 weeks exceeds the typical pupal development time significantly, suggesting extended environmental conditions or other stress factors that are not usual for the majority of mosquito species.