Consider the statements A and B on permanent winds and choose the correct…

Concept

Winds are classified by how long and how consistently they blow. Permanent (planetary) winds are driven by the fixed global pattern of pressure belts created by unequal solar heating and the Earth's rotation; they blow constantly, in the same direction, throughout the year, from a permanent high-pressure belt toward a permanent low-pressure belt. This is unlike seasonal winds (e.g. monsoons, which reverse direction with the season) or local winds (which blow only for part of the day).

Application

Statement A restates exactly this definition - a permanent wind blows constantly, in a fixed direction, all year - so A is true.

Statement B names Westerlies and Easterlies. Westerlies blow from the subtropical high-pressure belts toward the sub-polar low-pressure belts (roughly 30 degrees to 60 degrees latitude), and Easterlies (the Trade winds and Polar easterlies) blow from the subtropical and polar high-pressure belts toward the equatorial and sub-polar lows respectively. Both are textbook examples of the fixed planetary wind system, so B is also true.

Since both A and B hold, the correct choice is the option stating both statements are true.

Cross-check

• The pair asserting A true and B false would require Westerlies/Easterlies to NOT be permanent winds - but they are the standard, named examples of this wind system in every geography syllabus, so this pairing fails.

• The pair asserting A false and B true would require the constant-direction definition itself to be wrong - but that is precisely how permanent winds are defined, so this pairing fails.

• The pair asserting both false would require both the definition and the named examples to be wrong at once, which contradicts standard geography content, so this pairing also fails.

Only the both-true pairing survives, confirming the answer.