The correct answer is Both (A) and (R) are true and (R) is the correct explanation of (A). Explanation & Key Takeaways: • The isotherm lines remain almost parallel to one another and parallel to latitudes on oceanic surfaces. • Temperatures at maritime locations are free from the effect of elevation. • The reason is that the heating or cooling rate of water is much less as compared to land. • It means that water takes more time to get hot or cold than land. • Therefore temperatures at maritime locations are free from the effect of elevation. • Hence Both (A) and (R) are true and (R) is the correct explanation of (A). Important Notes: • The temperature of the air at any place is influenced by: • The latitude of the place. • The altitude of the place. • Distance from the sea. • The air- mass circulation. • The presence of warm and cold ocean currents. • Local aspects.