Between 1948 and 1983,when unemployment increased,big strikes:

A) were more common
B) were less common
C) were as common as they were when unemployment fell
D) ceased entirely

When unemployment increased between 1948 and 1983, big strikes were less common. This is because high unemployment creates a surplus of workers, making it easier for employers to replace striking workers with new hires. As a result, unions may be less likely to call for strikes, or may be more willing to compromise during negotiations to avoid a strike.