Read the passage and mark the letter A, B, C or D on your answer sheet to indicate the best answer to each of the following questions 17 to 26.

The alarming surge in human trafficking from Vietnam to Cambodia has emerged as one of Southeast Asia's most pressing humanitarian crises, with thousands of victims ensnared in sophisticated criminal networks operating cyber-scam compounds. [I] These operations, disguised as legitimate employment opportunities promising lucrative salaries in customer service or technology sectors, systematically exploit economic vulnerabilities prevalent throughout Vietnam's rural provinces. Victims, predominantly young adults seeking upward mobility, discover upon arrival that they've been sold into forced labor, compelled to execute online fraud schemes targeting international victims while enduring brutal conditions and severe physical punishment for resistance or underperformance.

[II] The trafficking pipeline operates with disturbing efficiency through coordinated recruitment networks spanning Vietnam's poorest regions. Agents offering overseas employment circulate through villages, presenting fabricated contracts guaranteeing monthly salaries exceeding $1,000—figures representing transformative income for families subsisting on agricultural wages. Sophisticated deception extends beyond initial recruitment; victims receive detailed orientation materials, fraudulent company documentation, and testimonials from supposed employees. Only upon crossing borders, frequently through irregular channels avoiding official checkpoints, do victims comprehend the authentic nature of their situation when passports are confiscated and escape becomes impossible.

The scam compounds themselves, concentrated near Cambodia's borders with Thailand and Vietnam, function as modern slavery operations concealed behind legitimate business facades. [III] Victims endure eighteen-hour workdays executing romance scams, cryptocurrency fraud, and investment schemes targeting predominantly Western victims through meticulously crafted online personas. Failure to meet daily quotas—often requiring extraction of thousands of dollars from marks—results in physical beatings, food deprivation, electric shock torture, and threats against families remaining in Vietnam. Survivors' testimonies document horrifying conditions including sexual assault, forced drug consumption to maintain productivity, and witnessed murders of those attempting escape or becoming commercially unviable through injury or psychological breakdown.

Vietnamese and Cambodian authorities face extraordinary challenges combating these transnational criminal enterprises. [IV] Despite bilateral cooperation agreements and increased border surveillance, traffickers continuously adapt methodologies, exploiting corruption within law enforcement agencies and capitalizing on jurisdictional complexities inherent in cross-border crimes. Diplomatic tensions periodically surface when rescue operations encounter resistance from Cambodian officials allegedly complicit with trafficking networks or protective of foreign investment relationships with companies operating these compounds. International organizations estimate that tens of thousands remain trapped, with rescue efforts recovering merely a fraction while trafficking continues unabated, sustained by poverty's endless supply of vulnerable recruits and cyber-scam industries' exponentially growing profitability.

(Adapted from BBC News)

Read the passage and mark the letter A, B, C or D on your answer sheet to indicate the best answer t...