The term "scab" refers to which type of individual?

The term "scab" is commonly used in labor relations to refer to individuals who cross picket lines to work during a strike, effectively undermining the strike's goals. These individuals, often referred to as strikebreakers, are typically hired to replace striking workers temporarily. Their actions can weaken the bargaining power of the union by allowing the employer to maintain operations despite the work stoppage initiated by employees seeking better conditions, wages, or other grievances. The use of this term is significant in labor disputes, as it highlights the conflict between the interests of striking workers and those who are willing to take their jobs during the work stoppage. The other choices describe different roles within the labor movement but do not capture the specific meaning associated with "scab."