Answer: The other options include; dialogue; notification; peaceful protest and ultimatum.
Explanation: 1) Dialogue: Dialogue refers to a discussion between the two opposing parties. The teachers or their union may opt for a round table discussion to negotiate on the issue and its possible resolution.
2) Peaceful protest: A protest is an expression of strong opposition or disapproval of something. This is an option that can be exercised in a peaceful way by demonstration the grievance.
3) Notification or Ultimatum: Notification involves an information on when an option either expires or is to be exercised while an ultimatum is a demand that can be followed up with penalty or threat. This is also an option used by Pacific Island Countries in resolving the impasse before resulting to strike.