CITI Good Laboratory Behavior Practice Test

The environment of an animal housing room refers to which of the following?

The temperature and the relative humidity range at any point in time Lighting duration Noise level Ventilation rate

Correct Answer:

The temperature and the relative humidity range at any point in time

Explanation:

In this context, the environment of an animal housing room is defined by the actual physical conditions the animals experience, with temperature and relative humidity being the most fundamental measures of those conditions. These two factors directly influence comfort, metabolism, hydration, and health, and they’re routinely monitored to keep animals within a stable, acceptable range. While lighting duration, noise level, and ventilation rate matter for welfare and air quality, they describe additional aspects of the environment rather than defining its core state. Keeping temperature and humidity within appropriate ranges ensures animals remain comfortable and that experimental results are reliable, which is why this option best captures the environment.

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