Question

which strategy did companies use to stop strikes from growing?
they hired workers to cross the picket line if a group of workers went on strike
they offered workers a sum of money to stop striking.
they asked supervisors to do the work of the people on strike.
they forced workers to sign contracts promising they would not strike.

Explanation:

Companies often hired replacement workers (scabs) to cross picket lines during strikes to keep operations running and undermine the strikers' power. Offering money to stop striking is not a common long - term strategy. Supervisors usually do not do the work of striking employees due to differences in job roles. Forcing workers to sign non - strike contracts is illegal in many cases.

Answer:

They hired workers to cross the picket line if a group of workers went on strike.