Most of the eastern United States and the West Coast have a climate that is-

F)mountain H)desert
G)polar J)temperate

My answer is temperate, am i right if not please tell me why?

You're right.

To determine the climate of a specific region, it is important to consider various factors such as temperature, precipitation patterns, and vegetation. In the case of the eastern United States and the West Coast, the climate is generally classified as temperate.

To arrive at this conclusion, you can examine the climate characteristics of these regions. The eastern United States, including states such as New York, Pennsylvania, and Florida, experience four distinct seasons with moderate to high rainfall throughout the year. Summers are typically warm and humid, while winters can range from mild to cold.

Similarly, the West Coast, including states such as California, Oregon, and Washington, features a Mediterranean climate. This means mild, wet winters and warm, dry summers. The coastal regions are influenced by cool ocean currents, leading to a moderate and temperate climate.

Based on these characteristics, it is safe to say that most of the eastern United States and the West Coast have a temperate climate (option J) rather than the other options such as mountain (F), desert (H), or polar (G). Thus, your answer of temperate is correct.