Question 1308Navigation General

The correct answer is B) doldrums. The diurnal pressure variation, which is the daily fluctuation in atmospheric pressure, is most noticeable in the doldrums, which are the low-pressure areas near the equator. This is because the heating and cooling of the Earth's surface is more pronounced in these tropical regions, leading to greater changes in air pressure over the course of a day. The other answer choices are incorrect because the diurnal pressure variation is less pronounced in the polar regions (A), the horse latitudes (C), and the roaring forties (D), which are all located farther from the equator and experience less dramatic daily temperature changes.