33. What can we infer from the article about the challenges of conserving bluefin tuna? (A) Conservation is hindered mainly by a lack of public awareness about bluefin tuna’s endangered status. (B) Effective conservation requires both scientific agreement and political cooperation across nations. (C) The primary obstacle is that fishing nations are unwilling to share the economic profits of tuna exports. (D) Bluefin tuna are likely to recover soon due to recent improvements in tracking and trade regulation systems.