which methods were used by employers?
a. lockouts and picketing
b. boycotts and arbitration
c. blacklists and injunctions
d. strikes and collective bargaining

The answer is option A "lockouts and picketing"

Explanation:

At the point when collective bargaining arrives at a stalemate, and certain other lawful principles are followed, a legitimate work stoppage may happen. Work stoppages are regularly alluded to as either strikes or lockouts, the two of which are frequently joined by picketing. The outcome is the incomplete or complete withdrawal of work and the close absolute restriction on the utilization of substitution laborers.

A work stoppage might be started by the association, as a strike, or by the business, as a lockout. A strike need not be a finished stoppage of work and may incorporate work withdrawals as additional time boycotts, work log jams or turning strikes.

The reason for a strike is to force a business to consent to terms and states of work, though a lockout is planned to apply comparative tension on the representatives and the association. The functional aftereffect of each, regarding the effect on the's business, is for all intents and purposes indistinguishable.

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