They are dangerous to the environment because they have no natural competition. That being said they have nothing to keep their population in check, therefore, taking away food, and habits from all the other species. Thus, causing species to die out, which in turn ruins the food chain.
Monthly mean temperature of oceanic climates should be below 22°C in the warmest months. Hottest month is on July. From the options, the location most likely situated near the ocean should be A. It's not B or D since it has 18°C. Not C as well as the interval of temperatures seems to be offset, and it should be colder as it approaches October.
