What is the average development time for American Roaches at room temperature?

The average development time for American Roaches, or Periplaneta americana, at room temperature is generally around 600 days. This timeframe accounts for the complete life cycle from egg to maturity under typical environmental conditions such as temperature and humidity, as these roaches require adequate time to grow and develop through various life stages. Room temperature is conducive for their growth, allowing them to thrive and progress through their life cycle, which includes the egg, nymph, and adult stages. Therefore, the choice indicating 600 days accurately reflects the biological and developmental realities of the American Roach, making it the correct answer in this context.