Answer:
The humid continental climate has warm summers and cold winters.
Explanation:
The first option is not correct because neither the summer nor winter are mild in this climate type.
The second option is not correct because the summers are not cool, but they are warm.
The third option is correct because the summers in this climate type are very warm and dry, while the winters are very cold and with large amounts of snowfall.
The fourth option is not correct because the winters are not hot in this climate type.