A weather forecast predicts that a sunny week will be followed by a rainy weekend

Which pressure systems are likely to occur?
(1 point)
Item 2
Item 3
Item 4
first a high-pressure system, and then another high-pressure system
first a low-pressure system, and then another low-pressure system
• first a high-pressure system, and then a low-pressure system
• first a low-pressure system, and then a high-pressure system

The correct answer is: first a high-pressure system, and then a low-pressure system.