The correct answer is - less extreme.
The season by the ocean are less extreme than the inland areas. This is due to the water of the ocean. The water heats slowly (slower than the land) and cools down slowly (slower than the land), so it never reaches any extremes in temperatures. Because of this and the influence that the water has on the land around it, the land that is near the ocean has much more milder summers and winters than the inland where the influence of the ocean is much smaller or minimal.