Correct option is C
The correct sequence of the different settlement stages of the WTO dispute settlement system:
1.
Consultations (E): The first stage is consultations between the disputing parties. They are encouraged to engage in discussions and negotiations to resolve the dispute amicably. If the consultations do not lead to a resolution, the complaining party can request the establishment of a panel.
2.
Panel Review (C): If consultations fail to resolve the dispute, a panel is established. The panel conducts a review of the case, examines the arguments and evidence presented by both parties, and issues a panel report. The panel report contains findings of fact, legal interpretations, and recommendations.
3.
Appellate (D): Either party can appeal the panel's report. The Appellate Body, a standing body of seven members, reviews the legal aspects of the panel report and issues a report containing its own findings and conclusions. The Appellate Body's report is binding unless there is a consensus by the WTO membership not to adopt it.
4.
Implementation (B): After the dispute settlement process, the losing party is expected to bring its measures into conformity with the WTO agreements and the recommendations of the panel and Appellate Body reports. This stage involves implementing the necessary changes to comply with the rulings.
5.
Retaliation (A): If the losing party fails to implement the recommendations within a reasonable period, the prevailing party can seek authorization from the Dispute Settlement Body (DSB) to impose retaliatory measures. Retaliation allows the prevailing party to impose trade sanctions or other measures to compensate for the harm caused by the non-compliance.
Therefore, the correct sequence is (c) E, C, D, B, A: Consultations, Panel Review, Appellate, Implementation, and Retaliation.