The characteristics of a hurricane are powerful winds, driving rain, and raging seas. although a storm must have winds blowing at least 74 miles an hour to be classified as a hurricane, it is not unusual to have winds above one hundred and fifty miles per hour in a major hurricane. the entire storm system can be five hundred miles in diameter, with lines of clouds that spiral toward a center called the "eye." within the eye itself, which is about 15 miles across, the air is actually calm and cloudless. but this eye is enclosed by a towering wall of thick clouds where the storm's heaviest rains and highest winds are found.

what is the main idea presented in this paragraph?

a. the eye of a hurricane is about 15 miles across.

b. hurricanes have winds of at least 74 miles an hour.

c. hurricanes are more destructive than tornadoes.

d. hurricanes have very dangerous characteristics.