Choose the option opposite in meaning to the word(s) or phrase that is underline...

This question is asking you to choose the option that means the opposite of the underlined word or phrase in the sentence. The sentence is "The striking workers have vowed not to return to work until the decision is rescinded." The underlined word is "rescinded". It means that the decision was cancelled or taken back.

To answer the question, you need to choose the option that means the opposite of "rescinded". The options are: implemented, changed, dismissed, and incorporated.

Option A is "implemented". This means that the decision was carried out or put into action. This is the opposite of "rescinded". Therefore, Option A is the correct answer.

Option B is "changed". This means that the decision was altered or modified. This is not the opposite of "rescinded".

Option C is "dismissed". This means that the decision was rejected or fired. This is not the opposite of "rescinded".

Option D is "incorporated". This means that the decision was included or merged. This is not the opposite of "rescinded".

In summary, the opposite of "rescinded" is "implemented". Therefore, Option A is the correct answer to the question.